Question

1 - cosA / sinA is equal to

(a) sinA / 1- cosA
(b) sinA / 1+ cosA
(c) cosA / 1- cosA
(d) cosA / 1+ cosA

please answer it ...​

Answer 1

Answer:

option (b)

Step-by-step explanation:

I hope it is useful for you

Answer 2

Answer:

(b)  sinA/1+cosA

Step-by-step explanation:

Put this equal to all the options given

CASE 1 :

Putting = option(a)

1-cosA/sinA = sinA/1-cosA

=> (1-cosA)^2 = sin^2A

NOT POSSIBLE , REJECTED...

CASE 2:

Putting = option(b)

1-cosA/sinA = sinA/1+cosA

=> (1-cosA)(1+cosA) = sin^2A

=> 1-cos^2A = sin^2A

=> sin^2A = sin^2A   (because sin^2A + cos^2A = 1 ==> 1-cos^A = sin^2A)

THEREFORE, ANSWER IS OPTION(b)..

HOPE IT HELPS