Question

cosec^2 60°+ sec^2 30° +cos^2 45°
(A)19/6
(B)-19/6
(C)6/19
(D)-6/19

Answer 1

Step-by-step explanation:

Cosec 60=2/root3

sec 30=2/root3

cos 45=1/root2

4/3+4/3+1/2

8/3+1/2

16+3/6

19/6.Thus,option (A) is the correct answer.