Question

cos 2A=1/2.solve it
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Answer 1

Hope it is helpful.......

Answer 2

Answer:

A=30°

Step-by-step explanation:

Given:-

• cos 2A=1/2

Solution:-

$\tt \huge\implies \: cos \: 2 \:A = \frac{1}{2} \\ \\ \tt \huge\implies \: cos \: 2 \:A = cos \: 60 \\ \\ \tt \huge\implies \: 2 \:A = 60 \\ \\ \tt \huge\implies \: \:A = \frac{60}{2} \\ \\ \tt \huge\implies \:A = 30 \degree$