UPSC CDS Math Trigonometric Ratios and Trigonometric Identities Questions

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Question : 32 of 107
 
Marks: +1, -0
If sin‌θ=
m2−n2
m2+n2
and 0<θ<
Ï€
2
,
then what is the value of cos θ ?
[2017 CDS-II]
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