Question

complimentary angle of sinA is
a) sinA(90°-A)
b)cosA(90°-A)
c)sinA(180°-A)
d)cosA(180°-A)​

Answer 1

Answer:

option A and B both are rights

Step-by-step explanation:

thanks dear friend

Answer 2

Answer:

B)

Step-by-step explanation:

sinA=cosA(90-A)

we can take an example to understand this ,

if A is 30 degrees then ,

sin30 = 1/2 .......(1)

cos(90-30) = cos 60

and as we know coz 60 = 1/2......(2)

so , option B is correct

Hope it helped !!