Math, asked by vijayagirajala, 9 months ago


The value of sin(n + 1)A sin(n + 2) A + cos(n + 1)A cos(n + 2)A is equal to
1)sinA 2)cosA 3)-cosA 4)sin2A​

Answers

Answered by anwari098begum
1

Step-by-step explanation:

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