clarice

a small plane heads west at 320 kph. there is a north wind blowing at 24 kph. what is the velocity (2 parts!) of the plane with respect to the ground? would the answer be 320.9 kph? but there are two parts to the answer. what is the other part?

prove the identity (1 + tan x) / sin x = csc x + sec x

prove each identity 1) (sec - cos) / tan = sin 2) (csc^2 - 1) / csc^2 = cos^2 3) (sin/csc) - 1 = -cos/sec

would it be approximately 4.29°?