In the proof, what is the reason for (3)? definition of a perpendicular bisector
sides opposite equal angles are equal
def. of an altitude
reflexive property
def. of a right triangle​

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

Solve the given system of equations. 2y= -x+9 , 3x-6= -15