Question

Question 6 2nd pard ,class 11 trigonometry

Answer 1

solving LHS
2sin^2π/6+cosec^2 7π/6.cosπ/6

2sin^2 180/6+cosec^2 7*180/6.cos180/6

2sin^2 30°+cosec^2 210°.cos^2 60°
(by substituting values)

2(1/2)^2+(-2)^2.(1/2)^2

1/2+1

3/2

hence proved RHS