Question

Evaluate cosec^2 67-tan^2 23

Answer 1

Hey,

cosec ^2 (67) - tan ^2 (23)

= cosec ^2 (67) - tan ^2 (90 - 67)

= cosec ^2 (67) - cot ^2 (67)

= 1

HOPE IT HELPS:-))

Answer 2

Evaluate cosec^2 67-tan^2 23

1