Casio FX82ES Scientific Calculator "cos 2" Questions

cos^2(x) means that the result of cos(x) is squared. Simpler: typed cos^2(x) = (cos(x))^2. Continuing from above: 3) press the left arrow [<-] until the cursor is on the left side of cos(x), 4) add

cos(x) that is one and the fractions like I want 1/2 = 0.5 It always give me this answer 1/2=1/2 root of 3 /2 is the same can you help me program it instead of putting a whole number put in a decamal.

...cos(a))=X 2*cosh(X)= e^(X)+e^(-X) e^(X)=(1+sin(a))/cos(a) e^(-X)= cos(a)/(1+sin(a)) 2cosh(X)=(1+sin(a))/cos(a) +cos(a)/(1+sin(a))= 2/cos(a) cosh(X)=1/cos(a)=sec(a) Now that you see how you can do it, ...

...cos(x) d^2/dx^2 (sin(x))= d/dx( cos(x))=-sin(x) d^3/dx^3 (sin(x))= -cos(x) d^4/dx^4 (sin(x))=d/dx(-cos(x))=sinx. In 100 successive differentiations you perform the foregoing sequence 100/4=25 times, ...

...2 cos x Sure. Press Y=. Type in ( 1 / 2 ) * cos( X ) ENTER Press GRAPH to see the graph. If the graph isn't too clear, press WINDOW and change Ymin to -2 and Ymax to 2, then press GRAPH again. Note: ...

...2. Sin(A+B) = sin(A)*cos(B) + sin(B)*cos(A) Taddahh! Ofcourse, you could just take the sum of A & B and throw that value into cosines input; but then you would be setting yourself back when it ...

cos^2 what do you type in to get cos squared? I can;t find it on my ti-83 plus cos(number)^2 (or use the square button)

...2. Press the key for the function COS, SIN, or TAN [COS] displays Cos( 3.Enter the angle 12 deg Screen shows cos(12 Close the right parenthesis ) Screen shows cos(12) 4.Press [=] Screen displays ...

...cos(e^2), it will print out cos(e^2) because it's the most exact it can be without going into a decimal. (cos(e^2) will be a transcendental number like Pi). Go into mode and scroll down to ...

...[COS^-1] ( 8 - 3 2ND [sqrt] 2 1 right-arrow ) / 2 5 ENTER If you're in the CLASSIC mode, press 2ND [COS^-1] ( 8 - 3 2ND [sqrt] 2 1 ) ) / 2 5 ENTER In either case you should get an answer of about