Let a and ß be nonzero real numbers...
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Let a and ß be nonzero real numbers such that 2(cos B - cos a) + cos a cos B = 1. Then which of the following is/are true ? MCQ [JEE Advanced -2017] (B) tan() – 13 tan (9) = 0 (©) 73 tan() - tan(9)= (D) Jə tan(9) + tan(9) =

JEE/Engineering Exams
Maths
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( cos C O B=frac{1-2 a n^{2} B / 2}{1+tan ^{2} beta / 2} ) ( f(0 s)=frac{1-2 a n^{2} d / 2}{1+tan ^{2} alpha / 2} ) and put it mald man ( 2(cos beta-cos alpha)+cos alpha cos beta=1 ) on soluing, you get 3) ( tan ^{2}left(frac{alpha}{2}right)=3 tan ^{2} frac{beta}{2} ) ( Rightarrowleft(tan frac{alpha}{2}-sqrt{3} tan betaright)=0 ) ( left(begin{array}{l}tan frac{x}{2}+sqrt{3}+arg beta 2end{array}right)=0 )
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