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Calculus II
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Trigonometric Identity Readiness
Worksheet
Grade Level
Calculus II
CAL2.3 Trigonometric Identity Readiness
0%
Skill Level
🔴 Hard
00:00
Progress to Next Level
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Easy
Medium
Hard
Mastery
100%
For ∫ cos
2
x cos(2x) sin x dx with u = cos x, which identity best rewrites cos(2x)?
A
cos(2x) = 1 - 2cos
2
x
B
cos(2x) = 2cos
2
x - 1
C
cos(2x) = 1 - 2sin
2
x
D
cos(2x) = sin
2
x + cos
2
x
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