Question

BRAINLIESTT ASAP! PLEASE HELP ME :)

Answer 1

Answer: B) none of the equations are identities

Explanation:

If you plug theta = 0 into the first equation and simplify, then you'll get

4*(sin^2(theta)-cos^2(theta)-tan^2(theta)) = 4*tan(theta)*csc(theta)

4*(sin^2(pi/4)-cos^2(pi/4)-tan^2(pi/4)) = 4*tan(pi/4)*csc(pi/4)

4*(1/2 - 1/2 - 1) = 4*1*sqrt(2)

-4 = 5.66

we get a false equation, so the first equation is not an identity.

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Plug theta = pi/4 into the second equation

17*((1-cos^2(theta))/(cos^2(theta)) = 17*sin^2(theta)

17*((1-cos^2(pi/4))/(cos^2(pi/4)) = 17*sin^2(pi/4)

17*((1-1/2)/(1/2)) = 17*(1/2)

17 = 8.5

which is a false equation, so this isn't an identity either.

Answer 2

The answer is number 3 only the first one is an identity most definite