If sin2 theta=½ then find the value of cos2theta
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Answered by
9
sin 2 theta =sin 30°
2 theta = 30
theta = 15
cos 2 theta = cos 30 = root 3/2
2 theta = 30
theta = 15
cos 2 theta = cos 30 = root 3/2
Answered by
4
Answer:
Step-by-step explanation:
Sin 2theta=Sin30 (1/2=Sin30)
On comparing
2theta=30
Theta=15
Cos2theta=cos30
Cos30=√3/2
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