COS A tan A +Sen A = 2cosA
TanA

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Of four points are collinear, they are also coplanar

Find the amplitude of a sinusoidal function that models this temperature variation