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India
Class X

Expand expressions using angle sum and difference identities

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

Consider the following.

Easy
3min

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

Easy
< 1min
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Outcomes

10.T.IT.2

Trigonometric Identities: Proof and applications of the identity sin^2 A + cos^2 A = 1. Only simple identities to be given. Trigonometric ratios of complementary angles.

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