Question

1+cosA=2sinAsinA
solve it by using trigonometric equation
or find the angle of A

Answer 1

Step-by-step explanation:

1 + cosA = 2 Sin^2

A = 60degree [ by try and error method]

1 + 1/2 = 3/ 2

2 × (root3/2)^2 = 3/2

therefore A = 60degree