we are given with two functions: sine of A equal to 3/5 and cosine A equal to 4/5. In this case, we are asked in the problem to determine the value of tangent of A. tangent of A is equal to the ratio of sine and cosine. Hence, tangent A = sine A/cos A = 3/5 / 4/5. Simplifying, tan A = 3/4.
