Write the expression as a single function of $α$ .
$\cos (0^{\circ} + α)$
Choose the correct answer below.
A. $- \cos α$
B. $\cos α$
C. $- \sin α$
D. $\sin α$

Answer

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Final Answer: The correct answer is B. $\cos α$ .

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Step 1 ：Write the expression as a single function of $α$ .

Step 2 ： $\cos (0^{\circ} + α)$

Step 3 ：Choose the correct answer below.

Step 4 ：A. $- \cos α$

Step 5 ：B. $\cos α$

Step 6 ：C. $- \sin α$

Step 7 ：D. $\sin α$

Step 8 ：The expression $\cos (0^{\circ} + α)$ can be simplified using the trigonometric identity for the cosine of a sum of two angles, which is $\cos (a + b) = \cos a \cos b - \sin a \sin b$ . In this case, $a = 0^{\circ}$ and $b = α$ . Since $\cos 0^{\circ} = 1$ and $\sin 0^{\circ} = 0$ , the expression simplifies to $\cos α$ . Therefore, the correct answer is B. $\cos α$ .

Step 9 ：Final Answer: The correct answer is B. $\cos α$ .

Write the expression as a single function of α.cos⁡(0∘+α)Choose the correct answer below.A. −cos⁡αB. cos⁡αC. −sin⁡αD. sin⁡α

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Popular Problems

Write the expression as a single function of $α$ .
$\cos (0^{\circ} + α)$
Choose the correct answer below.
A. $- \cos α$
B. $\cos α$
C. $- \sin α$
D. $\sin α$