Question

evaluate cosec13°/sec77° - cot20°/tan70°

Answer 1

I think it would be helpful

Answer 2

here is your answer....

cosec13°/sec77° - cot 20°/tan 70°
= cosec13°/ sec(90°-13°) - cot20°/ tan(90°-20°)
= cosec13°/ cosec13° - cot20°/ cot20°
=1-1
=0 (ans)
if it helps pls mark it brainliest