if the resistance of a car headlight is 15 ohm and the current through it is 0.60, what is the voltage across the headlight?

9 volts (assuming 0.60 is in Amperes)

Explanation:

Recall that Ohms law can be expressed as

V = IR, where

V = voltage,

I = current (given as 0.6. I'm going to assume that the units is Amperes because it is not given)

R = resistance (given as 15 ohm)

substituting the above values into the formula

V = IR

V = (0.6)(15)

V = 9 Volts

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray