Simplify 1+cosθ1cosθ+1cosθ1+cosθ


Answer:

2cosecθ

Step by Step Explanation:
  1. (1+cosθ)(1+cosθ)(1cosθ)(1+cosθ)+(1cosθ)(1cosθ)(1+cosθ)(1cosθ)=(1+cosθ)2sin2θ+(1cosθ)2sin2θ=(1+cosθ+1cosθ)sinθ=2cosecθ

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