UPSC CDS Math Trigonometric Ratios and Trigonometric Identities Questions

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Question : 39 of 107
 
Marks: +1, -0
If x‌sin‌θ=y‌cos‌θ=
2z‌tanθ
1−tan2θ
,
then what is 4z2(x2+y2) equal to ?
[2017 CDS-I]
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