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Θθθθsinθ+sin2θ1+cosθ+cos2θ = ______. -

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Question

`(sin θ + sin 2θ)/(1 + cos θ + cos 2θ)` = ______.

Options

  • `1/2 tan θ`

  • `1/2 cot θ`

  • tan θ

  • cot θ

MCQ
Fill in the Blanks

Solution

`(sin θ + sin 2θ)/(1 + cos θ + cos 2θ)` = tan θ.

Explanation:

`(sin θ + sin 2θ)/(1 + cos θ + cos 2θ)`

= `(sin θ + 2 sin θ cos θ)/(2 cos^2 θ + cos θ)`

= `(sin θ(1 + 2 cos θ))/(cos θ(1 + 2 cos θ))`

 = tan θ

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Trigonometric Functions of Triple Angle
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