Math, asked by jzelinsky, 10 months ago

Find exact value of, cos(π/16)cos(3π/16) - sin(π/16)sin(3π/16)

Answers

Answered by ruturajkolekar

0

Answer:

Formula: cosa*cosb - sina*sinb = cos(a+b)

so answer is cos(π÷4)= 0.717

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