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Math TN
10th Std
Ch-6: Trigonometry
1.
Trigonometric Identities
Exercise condition:
1
m.
If
(sin \ \alpha + cosec \ \alpha)^2 + (cos \ \alpha + sec \ \alpha)^2 = k + tan^2 \ \alpha + cot^2 \ \alpha
, then the value of
k
is equal to
7
9
5
3
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