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CanadaON
Grade 12

Expand expressions using angle sum and difference identities (rad)

Interactive practice questions

Expand $\tan\left(\theta-x\right)$tan(θx).

Easy
1min

Expand $\sin\left(3x-y\right)$sin(3xy), rewriting it in terms of angles $3x$3x and $y$y.

Easy
1min

Expand $\cos\left(2x+3y\right)$cos(2x+3y), rewriting it in terms of angles $2x$2x and $3y$3y.

Easy
< 1min

Express $\sin A\cos2B+\cos A\sin2B$sinAcos2B+cosAsin2B using one trigonometric ratio.

Easy
< 1min
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Outcomes

12F.B.3.2

Explore the algebraic development of the compound angle formulas, and use the formulas to determine exact values of trigonometric ratios

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