<span>A. cos(x) = cos(-x) [correct, since cos(x) is an even function]
B. Since the cosine function is even, reflection over the x-axis [y-axis] does not change the graph. [false]
C. cos(x) = -cos(x) [ false]
D. The cosine function is odd [even], so it is symmetrical across the origin. [false]</span>
Yes you need to! And you need to be careful not to forgot that when doing your calculations!!
Last one and first. You can find out why by isolating the cube root and cubing both sides.
Answer:
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Please mark me as the brainliest and thanks
B. 50 degrees hope this helps
