What is the sum or difference of 1/2 + 1/4, 3/5 - 2/15, 2/3 - 1/4, 1/6 + 4/5, 3/4 - 1/2, 11/15 + 3/10, 7/10 + 2/3, 7/8 - 9/16 and the simplest form of them!

Given (1+cosx)/(sinx) + (sinx)/(1+cosx) =4, find a numerical value of one trigonometric function of x. a. tanx=2 b. sinx=2 c. tanx=1/2 d. sinx=1/2

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.