NZ Level 8 (NZC) Level 3 (NCEA) [In development]
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Expand expressions using double and half angle identities

Interactive practice questions

Using the double angle identity for the cosine ratio, simplify the expression $\cos^2\left(4x\right)-\sin^2\left(4x\right)$cos2(4x)sin2(4x).

Express your answer as a single trigonometric function.

Easy
Approx a minute
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M8-6

Manipulate trigonometric expressions

91575

Apply trigonometric methods in solving problems

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