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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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