United States of America
Grades 9-12
6.04 Double and half angle identities
Interactive practice questions
Given $\cos\theta=\frac{4}{5}$cosθ=45 and $\sin\theta=\frac{3}{5}$sinθ=35:
a
Find the value of $\sin2\theta$sin2θ.
b
Find the value of $\cos2\theta$cos2θ.
c
Find the value of $\tan2\theta$tan2θ.
Easy
9min
Given $\cos\theta=\frac{4}{5}$cosθ=45 and $\sin\theta$sinθ$<$<$0$0, find:
Easy
9min
Given $\sin\theta=-\frac{7}{25}$sinθ=−725 and $\cos\theta$cosθ$<$<$0$0, find:
Easy
9min
Given $\tan\theta=\frac{5}{12}$tanθ=512 and $\cos\theta$cosθ$<$<$0$0, find:
Easy
9min
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