show that 1 + cos theta by sin theta + sin theta by 1 + cos theta equal to 2 cosec theta
Answers
Answered by
3
Step-by-step explanation:
1+cos/sin + sin/1+cos
=(1+cos)²+sin²/sin(1+cos)
=1+2cos+cos²+sin²/sin(1+cos)
=2+2cos/sin(1+cos)
=2(1+cos)/sin(1+cos)
=2/sin
=2cosec
Similar questions