3 Show that sin 0: 8. 1 cos (20) + %3D cos (40). 8 Which of the following four statements establishes the identity? O A. sin "e = (sin?e)° = 1+ cos (20) 3 1 cos (20) + %3D %3D %3D cos (40) 2 O B. sin 'o = (sin*o)° - cos e 1- cos (20) 3. 1 cos (20) + cos (40) !! %3D 8. C. sin e = (sin?e) = 1- cos (20) 3 1. cos (20) + cos (40) !! %3D 2 8. O D. 1+ cos (20) sin 'e = (sin°o) = 2 cos (20) + cos (40) %3D 8.

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A: In the question we have to find the value of sin2A.

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A: Solution (b):

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A: Thanks for the question :)And your upvote will be really appreciable ;)

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