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If (sin α + cosec α)^2 + (cos α + sec α)^2 = K + tan^2α + cot^2α, then K = ? (1) 9 (2) 7 (3) 5 (4) 3

+2 votes
in JEE by kratos

If (sin α + cosec α)2 + (cos α + sec α)2 = K + tan2α + cot2α, then K = ?

(1) 9

(2) 7

(3) 5

(4) 3

1 Answer

+1 vote
by kratos
 
Best answer

Correct option (2) 7

Explanation :

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