Question

find its value...plzz fast....​

Answer 1

Step-by-step explanation:

√1+cos t/1-cos t

Multiply with 1+cos t with numerator and denominator

= √1+cos t × 1+cos t / 1-cos t × 1+cos t

= √(1+cos t)^2 / (1)^2 - (cos t)^2

= √(1+cos t)^2 / (sin t)^2

= √(1+cos t)^2/ (sin t)^2

= 1+cos t/ sin t

= 1/sin t + cos t / sin t

= cosec t + cos t

hope this helps