What is the number writren in standard form six million, seven hundred ,twenty

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?