Question

If 2cosA = 1 then 2A = ?
Pleaseeeeeeeeeeeeeeeeeeeeeeeee helm me​

Answer 1

Step-by-step explanation:

2cosA=1

cosA=1/2--------eq.1

we know that:-

cos60=1/2-------:eq.2

from eq. 1 and 2 we get:-

cosA=cos60

hence A=60

and 2A=60*2

2A=120

Hope it helped

please mark as brainliest