Question

Evaluate √1+cos 60° / 2​

Answer 1

Answer:

√3

Step-by-step explanation:

In trigonometry, cos60° = (1/2)

So, here,

$= > \sqrt{ \frac{1 + \cos(60 \degree) }{2} } \\ \\ = > \sqrt{ \frac{1 + \frac{1}{2} }{2} } \\ \\ = > \sqrt{ \frac{ \frac{2+ 1}{2} }{2} } \\ \\ = > \sqrt{ \frac{ \frac{3}{2} }{2} } \\ \\ = > \sqrt{3}$

Answer 2

$\tt \huge \red{answer : - } \\ \\ \sf \: we \: \: know \: \: that \: \: \\ \\ \bf {cos \: 60 \degree = \frac{1}{2} } \: \\ \\ \sf \mapsto \: \sqrt{ \frac{1 + cos \: 60 \degree}{2} } \\ \\ \sf \mapsto \: \sqrt{ \frac{1 + \frac{1}{2} }{2} } \\ \\ \sf \mapsto \: \sqrt{ \frac{ \frac{2 + 1}{2} }{2} } \\ \\ \sf \mapsto \: \sqrt{ \frac{ \frac{3}{2} }{2} } \\ \\ \sf \mapsto \: \sqrt{3}$