Card - Cap (240) tlox (2420) 20
Question
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Card - Cap (240) tlox (2420) 20

JEE/Engineering Exams
Maths
Solution
65
Rating
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P) ( cos (alpha)+cos (alpha+2 theta)=cos (alpha+theta) ) - ( operatorname{doc} alpha+left[cos alpha cdot cos ^{2} theta-cos alpha cdot sin 2 theta-2 sin alpha cdot sin theta . cos thetaright] ) ( =(cos alpha cdot cos theta-sin alpha cdot sin theta) ) 7) ( cos alpha[1+cos 2 theta-sin 2 theta]-2 sin alpha sin theta cos theta=cos (x+theta) ) 8) ( cos x cdot[2 cos 2 theta]-2 frac{sin alpha cdot cos theta cdot sin theta}{f}=cos (alpha+theta) ) ( vec{z} ) ( 2 cos theta[cos alpha cdot cos theta=sin alpha cdot sin theta]=cos (alpha+theta) ) 2) ( cos theta=1 / 2 ) & ( theta=60^{circ}, 300^{circ} )
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