Question

The value of cosec70°-sec20°

Answer 1

Answer:

cosec70°-sec20°

cosec(90°-20°)-sec20°. :(cosec90°-0° =sec0°)

sec 20°-sec20°

=0

Answer 2

Answer:

Cosec =70° - sec 20°

Cosec ( 90°-20°) - sec 20°

sec20°- sec 20°

[:cosec (90°-0) = sec -0]

=0