5
QuizMultiple Choice

Solving Trigonometric Equations — Unit test

Question 5 of 25 • Precalculus

Which expression is equivalent to (1 + cos(x))2?

Question illustration
Answer
A
sin(x)
B
1 – cos(x)
C
1 – cos2(x)
D
(1 + cos(x))(sin(x))
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