If tanθ=1 by root 3 , then the value of cos2θ=
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Answer:
√3
Step-by-step explanation:
tan θ = 1 /√3
tan 30° = 1 /√3
∴ θ = 30°
cos 2θ = cos 2 ( 30° )
= cos 60°
= √3
∴ The value of cos 2θ = √3
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