Find cos q if q is an angle in standard position and the point with coordinates (3,-4) lies on the terminal side of the angle

cos q =

Step-by-step explanation:

Given:

Coordinate that lies on the terminal side =  (3,-4)

q is   angle in standard position

To Find:

cos q

Solution:

Form the given points we can figure out  a triangle

Thus in a triangle

Here the Adjacent side is   3 units

Opposite side is -4 units

Now the hypotenuse is

=

=

=

= 5 units

Thus cos q =

the answer is d

step-by-step explanation:

y+3=-4(x-2)

y+3=-4x+8

  -3         -3  

y=-4x+5