Question

prove that 1/cosa-cosa/ 1 = tana-sina​

Answer 1

Step-by-step explanation:

LHS = 1 / cosA - cosA

by doing LCM

1 - cos²theta / cos theta

sin²theta / cos theta

sin theta/cos theta × sin theta ..................

$({ \sin\: theta \: upon \: cos \: theta \: = tan \: theta \: })$

tan theta × sin theta

hence proved