Question

82. If sin a= P and tan a= Q, find the value of 1/P2 -1/Q2?
a) o
b) 1
c) 2
d)-1​

Answer 1

Answer:

0 is correct option

Hope its help you

Answer 2

Answer:

b)1

Step-by-step explanation:

1/sin^2a-1/tan^2a

1/sin^2a-cos^2a/sin^2a

1-cos^2a/sin^2a

sin^2a/sin^2a=1