If sin A=3/5, and A is acute, then cos A + tan A is :
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Correct answer: A
Explanation
sin A = 3/5
cos A = √(1 − sin²A) = √(1 − 9/25) = √(16/25) = 4/5
tan A = sin A / cos A = (3/5) ÷ (4/5) = 3/4
cos A + tan A = 4/5 + 3/4 = 16/20 + 15/20 = 31/20