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# Linear Approximation of Cosine Function

SVCALC-70EJUN

Determine the linear approximation for $f(\Theta)=\cos(\Theta)-1$ at $\Theta=\pi/2$.

A

$\Theta-1$

B

$-1-\Theta+\pi/2$

C

$-\Theta-\pi/2-1$

D

$1+\Theta+\pi/2$