Question

Plz help me plz

If 2costheta=1 and theta is acute angle,then what is theta =

Answer 1

Answer:

The answer is Theta= 60°

Step-by-step explanation:

2CosTheta=1

CosTheta= 1/2

Theta= cos^-1(1/2)

Theta= 60°

("cos^-1(1/2)= 60°")

Answer 2

$2 \cos(o) = 1 \\ = > \cos(o) = \frac{1}{2} \\ = > o = { \cos }^{ - 1} ( \frac{1}{2} ) \\ = > o = 60 \\ or \\ o = \frac{\pi}{3}$
Therefore the required angle is 60°.
Hope it helps you mate...
Regards !!!