If angle a and angle b are supplementary, find the value of x, angle a and angle b. angle a=2x, angle b= x-15

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Choose the equation below that represents the line that passes through the point (2, 4) and has a slope of 3. a) y − 4 = 3(x − 2) b) y − 2 = 3(x − 4) c) y + 4 = 3(x + 2) d) y + 2 = 3(x + 4)