Question

if sin 2theta= 1 then theta =___
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Answer 1

Answer:

Step-by-step explanation:

Given, sinθ+sin  

2

θ=1

⇒sinθ=1−sin  

2

θ=cos  

2

θ

Therefore, cos  

2

θ+cos  

4

θ=cos  

2

θ(1+cos  

2

θ)

=sinθ(1+sinθ)

=sinθ+sin  

2

θ

=1