if cos 2a=40 then find the measure of angle2
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I guess it's like this....
Cos2a=cos(90-40)
2a=50 (cuz cos gets cut on both d sides)
a=25
Cos2a=cos(90-40)
2a=50 (cuz cos gets cut on both d sides)
a=25
sarada16bng:
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