20. If 4 cosx=3&x is an acute
1 pc
angle, find x?
a) 00
b)450
Oc) 300
Od) 60°
Answers
Answered by
0
Answer:
4cos
2
x=3
cos
2
x=
4
3
cosx=±
2
3
Neglect the negative value, as the angle is acute
cosx=cos30
x=30
∘
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