Question

if 4 sin A-3, evaluate cos A and tan A?
do this !
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Answer 1

Answer:

cosA = √7/4

tanA = 3/√7

Step-by-step explanation:

4sinA - 3 = 0

4sinA = 3

sinA = 3/4

cosA = √(1-sin²A)

cosA = √(1-(3/4)²) = √(16-9)/16 = √7/4

tanA = sinA/cosA = (3/4)/(√7/4) = 3/√7