JEE MATHEMATICS MCQ: TRIGONOMETRIC EQUATIONS

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Application +4 | -1

\cos x+\cos y+\cos \alpha=0

and

\sin x+\sin y+\sin \alpha=0

, then

\cot \left(\frac{x+y}{2}\right)

is equal to

View answer and explanation

Correct option: C

\cot \alpha

Option C (

\cot \alpha

) is correct because it is derived by dividing the sum-to-product forms of the given equations and simplifying.

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