trig
posted by Sarah Fuller .
prove:
cos*2x=csc*2x2/csc*2x

I think you must be usint * as the power to, as in ^
right side: (csc^2 x  2)/csc^2 x
(12sin^2x) = 12(1cos^2x)=1+2cos^2x
which is clearly not an identity.
So I am not certain what your problem is. 
Your use of * in the last 3 posts will cause confusion
traditionally
* means multiplication
/ means division and
^ means "to the exponent"
so you want to say
cos^2 x=csc^2 x2/csc^2 x
but that statement is not true for all x's, I just tried any x and it did not work.
Use brackets to establish the proper order of operations.
Respond to this Question
Similar Questions

Trigonometry
I need to prove that the following is true. Thanks. csc^2(A/2)=2secA/secA1 Right Side=(2/cosA)/(1/cosA  1) = (2/cosA)/[(1cosA)/cosA] =2/cosA x (cosA)/(1cosA) =2/(1cosA) now recall cos 2X = cos^2 X  sin^2 X and we could say cos … 
Trigonometry
Hello all, In our math class, we are practicing the trigonometric identities (i.e., sin^2(x)+cos^2(x)=1 or cot(x)=cos(x)/sin(x). Now, we are working on proofs that two sides of an equation are equal (for example, sin(x)*csc(x)=1; sin(x)csc(x)=sin(x)/sin(x)=1; … 
verifying trigonometric identities
How do I do these problems? Verify the identity. a= alpha, b=beta, t= theta 1. (1 + sin a) (1  sin a)= cos^2a 2. cos^2b  sin^2b = 2cos^2b  1 3. sin^2a  sin^4a = cos^2a  cos^4a 4. (csc^2 t / cot t) = csc t sec t 5. (cot^2 t / csc 
Alg2/Trig
Find the exact value of the trigonometric function given that sin u = 5/13 and cos v = 3/5. (Both u and v are in Quadrant II.) Find csc(uv). First of all, I drew the triangles of u and v. Also, I know the formula of sin(uv) is sin … 
trig 30
For csc^2 A1/cot A csc A, what is the simplest equivalent trig expression? 
trig
prove the identity: csc x1/csc x+1 = cot^x/csc^x+2 csc x+1 
Math
cos(tan + cot) = csc only simplify one side to equal csc so far I got this far: [((cos)(sin))/(cos)] + [((cos)(cos))/(sin)] = csc I don't know what to do next 
PreCalculus
I don't understand,please be clear! Prove that each equation is an identity. I tried to do the problems, but I am stuck. 1. cos^4 tsin^4 t=12sin^2 t 2. 1/cos s= csc^2 s  csc s cot s 3. (cos x/ sec x 1) (cos x/ tan^2x)=cot^2 x … 
Math
How to prove this question with using a LS=RSstyle Proof? 
precalc
prove each identity 1) (sec  cos) / tan = sin 2) (csc^2  1) / csc^2 = cos^2 3) (sin/csc)  1 = cos/sec