If cos 2A = sin 40 degree ,then find the measure of angle A?
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cos 2A = cos(90°-50°)
cos 2A = cos 50°
=> 2A = 50°
=> A = 25°
cos 2A = cos 50°
=> 2A = 50°
=> A = 25°
arihant1174:
hi
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this question answers is 25
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