Math, asked by kpjasmith, 1 month ago

sin2A=cos(A-30) find value of A

Answers

Answered by simiprincy

3

Answer:

A = 40°

Step-by-step explanation:

sin 2A = cos ( A - 30° )

cos ( 90° - 2A ) = cos ( A - 30° )

90° - 2A = A - 30°

90° + 30° = A + 2A

120° = 3A

A = 120° / 3

A = 40°

Answered by manjula3ds

0

Answer:

ans:40

Step-by-step explanation:

hope it helped you

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