Question about Super Tutor Trigonometry (ESDTRIG) for PC

Please give the answer in detail.

Hi rowanwah

The sine of an angle is only applicable is a right triangle. If you just want a number, ie, the actual value of the sine 15 degrees you can look it up on Google. Do a search for "sine and cosine functions"

If you want the mathematical description of the sine of an angle it is described as follows

In a triangle ABC, there are 3 angles angle A, angle B and angle C. There are also 3 sides, Side AB, Side AC and side BC. The sine of angle A is equal to the side opposite Angle A divided by the Hypotenuse (the longest side opposite the right angle)

The Cosine of angle A is equal to the side adjacent to Angle A divided by the hypotenuse

Hope this helps Loringh PS Please leave a rating for me Thanks

Posted on Nov 17, 2008

Sin15 =sin(45-30) = sin45.cos30 - cos45.sin30

[ It is in the form of sin(A-B), so sin A. cosB - cosA. sinB]

- =1/1.414 .1.7321/2 - 1/1.414 .1/2
- =0.5175947
- so cos 15 is also same prosiger

Posted on Dec 05, 2008

Could you give a little more detail? When you say 'represent the number' do you mean how to write this height, 8.6 m above the water?

Or is it something else like time to hit the surface etc?

Or is it something else like time to hit the surface etc?

Sep 28, 2014 | Educational & Reference Software

Let m represent the subscription rate for a man, and w the subscription rate for a woman.

m/w=4/3, or** m=(4/3)w**.

2 men and 5 women paid 460. Thus

**2m+5w=460.**

Substitute**(4/3)w** for **m**, in **2m+5w=460**.

This gives an equation in the unknown w. Solve for w

2(4/3)w +5w=460 or (23/3)w=460.**Answer is w=60**

Use this value in the relation m=(4/3)w to get m=80.

**Check m/w=80/60=4/3**

m/w=4/3, or

2 men and 5 women paid 460. Thus

Substitute

This gives an equation in the unknown w. Solve for w

2(4/3)w +5w=460 or (23/3)w=460.

Use this value in the relation m=(4/3)w to get m=80.

May 09, 2014 | The Learning Company Achieve! Math &...

tan(x/2)=sin(x)/(1+cos(x))

Setting x/2=45, means that x=90 (degrees)

But cos(90)=0 and sin(90)=1. Thus tan(45)=1/(1+0)=1.

Setting x/2=45, means that x=90 (degrees)

But cos(90)=0 and sin(90)=1. Thus tan(45)=1/(1+0)=1.

Mar 13, 2013 | SoftMath Algebrator - Algebra Homework...

Answer:
angle a=9 degree
angle b=34 degree
angle c=21 degree
Explanation:
we have,
a+b=43............(1)
c+b=55..............(2)
c+a=30..............(3)
from (3) we get,
c=30-a...........(4)
substituting value of c from (4) in (2) we get,
30-a+b=55.........(5)
a+b=43..........(1)
(5)-(1) give
30-2a=12
30-12=2a
a=18/2=9 degree
giving value of 'a' in (1)
9+b=43
b=34 degree
similarly giving value of 'a' in (3)
c+9=30
c=21 degree

Oct 14, 2012 | TOPICS Entertainment Snap! Geometry...

Use the definitions of the intercepts.

x-intercepts (or zeros or roots) are the values of the independent variables that make the function equal to zero. To obtain an intercept set y=0 in equation : 5x=-10, mean x=-10/5=-2

y-intercept: value of y when x=0.

Just set x=0 in equaltion and solve for y

-4y=-10, gives y=5/2

And Sorry, I cannot enter the answer in the drop box.

x-intercepts (or zeros or roots) are the values of the independent variables that make the function equal to zero. To obtain an intercept set y=0 in equation : 5x=-10, mean x=-10/5=-2

y-intercept: value of y when x=0.

Just set x=0 in equaltion and solve for y

-4y=-10, gives y=5/2

And Sorry, I cannot enter the answer in the drop box.

May 10, 2012 | SoftMath Algebrator - Algebra Homework...

the solution you got is correct it is

cos X =2 and cos X =1/2

but we know maximum value of cosX is 1.so we discard the solution cos X =2

so only solution is cos X=1/2

and X = 60 degrees

hope you r satisfied.please rate the solution high.thank you

cos X =2 and cos X =1/2

but we know maximum value of cosX is 1.so we discard the solution cos X =2

so only solution is cos X=1/2

and X = 60 degrees

hope you r satisfied.please rate the solution high.thank you

Apr 17, 2010 | SoftMath Algebrator - Algebra Homework...

Simple
0.5(cos15 + (squer of 3).sin 15)
=0.5(cos15+(3x3).Sin15)
=0.5(0.9659+9x0.2588)
=0.5(0.9659+2.3292)
=0.5x3.2951
=1.64755
Zulfikar Ali
ali_zulfikar@yahoo.com
989980221

Mar 09, 2009 | Super Tutor Trigonometry (ESDTRIG) for PC

Hi Jehho soria

Draw a right triangle with the vertical portion of the triangle representing the 37 meters of the light house The base of the triangle is the distance we are trying to find. If the angle of depression is 15 degrees, the other angle is 75 degrees. This is the angle from the boat to the top of the lighthouse.

so The Tangent of 75 degrees is equal to the side opposite the angle (the height of the lighthouse) divided by the side adjacent (the distance we are trying to find.

solving for the distance we get distance = 37 divided by the tangent of 37 degrees

Looking up the tangent of 15 degrees on google give .2679

dividing 137 by .2679=138,1 meters

Hope this helps Loringh PS Please leave a rating for me.

Draw a right triangle with the vertical portion of the triangle representing the 37 meters of the light house The base of the triangle is the distance we are trying to find. If the angle of depression is 15 degrees, the other angle is 75 degrees. This is the angle from the boat to the top of the lighthouse.

so The Tangent of 75 degrees is equal to the side opposite the angle (the height of the lighthouse) divided by the side adjacent (the distance we are trying to find.

solving for the distance we get distance = 37 divided by the tangent of 37 degrees

Looking up the tangent of 15 degrees on google give .2679

dividing 137 by .2679=138,1 meters

Hope this helps Loringh PS Please leave a rating for me.

Nov 14, 2008 | Super Tutor Trigonometry (ESDTRIG) for PC

Your Question :

My Answer ::

In scalar multiplication we are considering only logical values and doing multiplication but here we are taking care of the direction of the force magnitude of the force applied to the body for the perfect accurate value which helps in making of the real world application.

here scalar values will not work for making any real thing, So in your question cos (a,b) suggests the resultant direction of the resultant force and |a||b| are the magnitude.

For more details on vector multiplication :: http://mathworld.wolfram.com/VectorMultiplication.html

My Answer ::

In scalar multiplication we are considering only logical values and doing multiplication but here we are taking care of the direction of the force magnitude of the force applied to the body for the perfect accurate value which helps in making of the real world application.

here scalar values will not work for making any real thing, So in your question cos (a,b) suggests the resultant direction of the resultant force and |a||b| are the magnitude.

For more details on vector multiplication :: http://mathworld.wolfram.com/VectorMultiplication.html

Sep 20, 2008 | Educational & Reference Software

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