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Question

Philoid · Accepted Answer

To find: Value of

Formula used: (i)

We have,

On expanding the above,

⇒ (sin 23°) (cos 7°) – (cos 23°) (-sin 7°)

⇒ (sin 23°) (cos 7°) + (cos 23°) (sin 7°)

On applying formula

= sin (23 + 7)

= sin (30°)