Question about Texas Instruments TI-83 Plus Calculator

# Trying to find the hypotenuse of a trangle

I have both the height and the length of a triangle, the height equals 15 and the length equals 15 what will the hypotenuse equal and how do i type the equation in my calculator to find it out?

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A squared + B squared = C squared
15 squared + 15 squared = C Squared
225 + 225 = c squared
450 = c squared
the square root of 450 is 21.21320433

Posted on Apr 30, 2009

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The type of triangle you described is a 45-45-90. to find the hypotenuse, simply multiply 15 by the square root of 2

Posted on May 07, 2009

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(A) squared plus (B) squared equals (C) squared

A=15
B=15

C=square root of 450= 21.213203

Posted on Aug 01, 2008

• slshankle Aug 01, 2008

assuming of course that it is a right triangle otherwise you have to know some angles also.

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## Related Questions:

### What is the length of the hypotenuse of the right triangle ABC in the figure? A. 5.8 B. 11.0 C. 7.2 D. 6.2

Hi David:
You've got me confused.
A triangle has 3 sides. You have provided 4 lengths and no picture.
The hypotenuse is joins the 2 sides that are the "legs" of the right angle.
The length of the hypotenuse is the square root of the sum of the squares of the sides.
Just apply the "rule" to the appropriate dimensions.
Cheers

May 06, 2016 | Office Equipment & Supplies

### Formula to calculate hyportenuse

The formula to calculate the hypotenuse of a right angled triangle is a^2 + b^2 = c^2 or in words, a squared plus b squared is equal to c squared. The most common mistake is that students make the hypotenuse a squared or b squared. The hypotenuse has to be c squared. Thus, when figuring out the sides of a right-angled triangle, always make sure the hypotenuse is the longest side.

For example, a triangle with sides of length 3 and 4, calculate the hypotenuse. Let a be 3 and b be 4. 3^2 + 4^2 = c^2 or 9+16 = c^2, or 25 = c^2. Now take the square root of both sides and we get c = 5.

Feb 18, 2015 | Office Equipment & Supplies

### Using the Pythagoran Theorem , find the length of a leg of a right triangle if the other leg is 8 feet long and the hypotenuse is 10 feet long . Q

10 x 10 = 100
8 x 8 = 64
x = sqroot (100-64)
x = sqroot (36)
x = 6 feet
the square of the hypotenuse equals the square of the adjacent + Square of the opposite.

So H^2 = O^2 + A^2

the convention is C^2 = A ^2 + B^2
square root of any of the components gives the actual value
but the addition or subtraction has to be the square of the values
http://www.mathsisfun.com/pythagoras.html

Feb 07, 2015 | Office Equipment & Supplies

### The sum of two square numbers is equal to a squar

3^2=9
4^2=16
9+16=25 =5^2
You can write 3^2+4^2=5^2
(3,4,5) form a Pythagorean triple.
If you construct a right triangle with legs =3 and 4, the hypotenuse will be 5, because in a right triangle the Pythagorean theorem holds true.
It says (leg_1)^2+l(leg_2)^2=(hypotenuse)^2
Other Pythagorean triples are (5,12,13), (9,40,41)

Sep 04, 2014 | Office Equipment & Supplies

### How to determine the hypotenuse of a triangle measuring 5ft base and a 4 foot hieght?

Hypotenuse squared = base squared + height squared.

H^2 = 5^2 + 4^2
H^2 = 25 + 16
H^2 = 41
H = sqrt(41)

May 06, 2014 | Office Equipment & Supplies

### Given a length of 30 cm on the x axis and a length of 10 cm on the y axis and a angle of 90 at the x/y axis intersection is there a short cut to calculate interior angles and hypot. of the triangle?

Yes, there is shortcut because this is right triangle, so you can use Pythagorean theorem (see picture).
1. Length of hypotenuse is square root of sum of squares of lengths of other two sides of triangle, which is equal to square root of 30^2+10^2=31.6 cm.
2. Sin(a)=longer cathetus/hypotenuse=0.949 so a=arcsin(0.949)=71.6 degrees
3. Finally b=90-a=18.4 degrees.

Sep 05, 2011 | Texas Instruments TI-30XA Calculator

### How to use Texas Instruments TI34II Calculator? Especially I want to now how to use sinus, cosinus, and tangen on it. In Indonesia we call it "sin, cos, tan" Need your help, thanks.

Sinus, cosinus, and tangens (Latin names) are the same as sine, cosine, and tangent (full English names), which are abbreviated to sin, cos, and tan. If you're asking how to use these functions, they deal with right triangles and finding the missing angles or side lengths of the triangle.

Using this picture, the sine of angle A equals a/c, the tangent of angle B equals b/a, and the cosine of angle A equals b/c, and so on.

In a calculator, simply hit the desired function (sin, cos, or tan), then in parenthesis put the measure of the angle, and then use what you know about the triangle to find out the rest.

Mar 03, 2011 | Texas Instruments 30XIISTKT1L1A Calculator

### How much will be height from one point to other for 14.4 mts with

I am not exactly sure what the 14.4 m distance represents: The horizontal part or the inclined one.

A. If the 14.4m is the length of the horizontal leg, then the height is given by tan(3 deg)=h/14.4m or h=14.4m*tan(3 deg) =0.75467 m.

B. However if 14.4 m is the length of the inclined part (the hypotenuse) of the triangle, then the height is given by
sin(3 deg)= h/14.4m or h=14.4 m *sin(3 deg)= 0.75363 m

As you can see, the values are approximately equal, because for angles less than 10 deg, the sine and tangent are approximately equal.

I am no construction engineer, but it seems to me that a 3 deg pitch in not much of an inclination. Maybe you meant 30 degree pitch.

If that be the case, the calculations are performed the same way as above: Just substitute 30 deg for 3 deg.

May 08, 2010 | Casio FX-115ES Scientific Calculator

### I keep getting ERR:DOMAIN when ever i do the inverse sin

inverse sine (sin^-1) gives you the angle when the opposite side length and the hypotenuse, in relation to that angle, are given. therefore, if you want to do sin^-1(x), 0<x<1 for all real triangles ex. sin^-1(1/2) would equal 30. if you get a decimal, then go to [Mode] and select degrees instead of radians to get angle measures instead of radians... :)

Apr 23, 2009 | Texas Instruments TI-83 Plus Calculator

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