Distance Problem

I need an explanation as well as a formula for how to do this problem? Ryan starts jogging home at the rate of 6km/hr. After reaching Harbor Front, he begins jogging back home. Because of fatigue, his speed for the return trip decreases to 4.5km/h and takes 1 hour longer. Determine the total distance that Ryan jogged.

Calculate cos(3u) in terms of cos(u)

Calculation of cos(3u) in terms of cos(u)

Trigonometric functions

Explanation of the sine , cosine, tangent, cotangent functions and inverse trigonometeric functions like arcsin, arccos, arctan and arccot functions with graphics.

Evaluating Trig functions

Use the given values to evaluate the remaining trig functions. sin(-x) = -1/3, tan x = -sq. root of 2/4 Please show me the complete steps to evaluate this problem.

Trigonometry functions of any angle

Find two values of theta where sin theta = .3907?