Find the Tangent and Normal line to the given curve. y=√(16+x^2) at the origin.
A 100 foot wire is extended from the ground to the top of a 60 foot pole, whish is perpendicular to the level ground. Find to the nearest degree, the measure of the angle that the wire makes with the ground.
f(x) = 6 arcsin square root 1-x
Find side a in ∆ABC, side b = 12 m, side c = 20 m and angle B = 45˚.