Question

1+cos
Q.1. If <x<21, then
1+COS X divided by 1-cos x
(a) cosec x + cotx (b) cosec x-cotx (c)-cosec x + cotx
(d)-cosecx-cotx​

Answer 1

Answer:

(d)-cosecx-cotx

Step-by-step explanation:

Cosecx-cotx=2……………………(1)

(cosecx-cotx)×(cosecx+cotx)/(cosecx+cotx)=2

(cosec^2x-cot^2x)/(cosecx+cotx)=2

1/(cosecx+cotx)=2

cosecx+cotx=1/2……………………..(2)

On adding eq.(1) & (2)

2cosecx=5/2

cosecx=5/4 , Answer

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