Question

sin (90-A) = 1/2 then find the value of A​

Answer 1

Answer:

A=60

Step-by-step explanation:

Sin(90-A)=1/2

=>CosA=1/2

=>CosA=Cos60

=>A=60

Answer 2

Answer:

A = 60°

Step-by-step explanation:

since we know that, sin(90°-A)=cos A

Therefore,

putting value of sin(90°-A) in the question:

cos A=1/2 ------------------(1)

    [as we had learnt the trignometry values table, from that we can easily conclude or find that :

     cos 60° = 1/2  --------- (2) ]

now, comparing both equation (1) and (2), we find that:

A= 60°.

HOPE IT HELPS YOU...