Your solving for variable x
do move all the terms containing x to the left and all other terms to the right
so we going to add -0.5y to each side of the equation
0.2x + 0.5y + -0.5y = 4 + -0.5y
them combine like terms 0.5y + -0.5y =0.0
0.2x +0.0 =4 + -0.5y
0.2x = 4 +-0.5y
Divide each side by 0.2
x= 20 +-2.5y
x=20+ -2.5y
We are given a concave spherical mirror with the following dimensions:
Radius = 60 cm; D o = 30 cm
Height = 6 cm; h o = 6 cm
First, we need to know the focal length, f, of the object (this should be given). Then we can use the following formulas for calculation:
Assume f = 10 cm
1/ f = 1 /d o + 1 / d i
1 / 10 = 1 / 30 + 1 / d i
d i = 15 cm
Then, calculate for h i:
h i / h o = - d i / d o
h i / 6 = - 15 / 30
h i = - 3 cm
Therefore, the distance of the object from the mirror is 3 centimeters. The negative sign means it is "inverted".
The answer:
0=cos^-1 (0.9326)
0=21.156
Nearest tenth:
0=21.2
