Question

Prove that under root 1-cos theta

Answer 1

Step-by-step explanation:

Given,

L.H.S.= √(1-cos∅)/(1+cos∅)

multiply and divide by (1-cos∅)...we get,

=√(1-cos∅)×(1-cos∅)/(1+cos∅)(1-cos∅)

=√(1-cos∅)²/(1-cos²∅)

=√(1-cos∅)²/sin²∅

= (1-cos∅)/sin∅

=(1/sin∅)- (cos∅/sin∅)

=cosec∅- cot∅

=R.H.S.