Multiple Choice Question: Find the value of $x = \sin^2 \varphi - \cos^2 \varphi$ if $\varphi$ is $\pi / 4$ or $45^\circ$.

Find the value of $x = \sin^2 \varphi - \cos^2 \varphi$ if $\varphi$ is $\pi / 4$ or $45^\circ$ .

A. 3	C. 1
B. 2	D. 0

Jhun Vert Fri, 06/07/2024 - 21:12

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