Question

17. If cosec 0 = 15, find the value of:
(i) 2 - sin? 0 - cos2 0
(ii) 2 +
1
.
sin- o
2.
COS
2.
sin e​

Answer 1

Answer:

Step-by-step explanation:

cosec Theta = 15

1/ sin Theta = 15

sin Theta = 1/15

Cos (2 Theta) =  1- 2( sin ^Theta) =

                      =1- 2 (1/225)

                      = 223/225