Question

[1+ cot theta + sec {π/2+theta}+[1+cot theta + sec {π/2-theta} = 2 Cot theta ......prove that

Answer 1

{1 +cot∅ + sec(π/2 + ∅) }+(1+cot∅ + sec(π/2 -∅)}

=( 1+cot∅ -cosec∅)+(1+cot∅ +cosec∅)


= 2 + 2cot∅