Given sin∅ = 1/3 and 0 < ∅ < π/2 ; find tan2∅ a. (4√2)/9 b. 9/7 c. (4√2)/7 d.7/9

From the fundamental law of trigonometric, we have

Since , the cosine must be positive, so we choose the positive solution:

Now, the rule for the double angle of the tangent states that

the answer is c hope this