F(x) = 16xsquare + 36 = 0 quadratic formula

x= -3/2

Step-by-step explanation:

16x^2+36=0

4(4x^2+9)=0

4x^2+9=0

4x^2=-9

x^2= -9/4

x= -3/2

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.