Question

Which of the following is NOT true? \[ \cos x=\sin \left(\frac{\pi}{2}-x\right) \quad \csc x=\cot \left(\frac{\pi}{2}-x\right) \] \[ \sec x=\csc \left(\frac{\pi}{2}-x\right) \quad \sin x=\cos \left(\frac{\pi}{2}-x\right) \]

          Which of the following is NOT true?
\[
\cos x=\sin \left(\frac{\pi}{2}-x\right) \quad \csc x=\cot \left(\frac{\pi}{2}-x\right)
\]
\[
\sec x=\csc \left(\frac{\pi}{2}-x\right) \quad \sin x=\cos \left(\frac{\pi}{2}-x\right)
\]

Which of the following is NOT true?

cos x=sin((π)/(2)-x) csc x=cot((π)/(2)-x)

sec x=csc((π)/(2)-x) sin x=cos((π)/(2)-x)

Added by Blake S.

Algebra and Trigonometry Real Mathematics, Real People

Ron Larson 7th Edition

Chapter 6

Instant Answer

Solved by Expert Nicole Hoffman

Step 1

We have four identities to verify: Show more…

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Which of the following is NOT true? \[ \cos x=\sin \left(\frac{\pi}{2}-x\right) \quad \csc x=\cot \left(\frac{\pi}{2}-x\right) \] \[ \sec x=\csc \left(\frac{\pi}{2}-x\right) \quad \sin x=\cos \left(\frac{\pi}{2}-x\right) \]