Math, asked by khanamhuda683, 10 months ago

14. यदि A =30°, तो सिद्ध कीजिए sin 3A =3sin A-4sin' A​

Answers

Answered by RvChaudharY50
4

Answer:

putting A = 30 in above equation we get

sin90 = 3*sin30 - 4sin³30

1 = 3/2 - 4(1/2)³

1 = 3/2 -1/2 = 1

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