Question

13. (1 - sec² theta) (1 -cos ec² theta -1) =​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Step-by-step explanation:

1-sec^2 theta=-tan^2 theta

And

1-cosec^2 theta =-cot^2 theta;

cot^2 theta+1=cosec^2 theta;

By this

(1-sec^2 theta)(1-cosec^2 theta-1)

=(-tan^2 theta)(-cot^2 theta -1)

=(-tan^2 theta)(-(cot^2 theta +1)

=(-tan^2 theta)(-cosec^2 theta)

=sin^2 theta/cos^2 theta*1/sin^2 theta

=1/cos^2 theta

=sec^2 theta