Find all of the points on the y-axis that are twice as far from (-6,0) as they are from (sqrt3,0)

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Select the correct answer from each drop-down menu. rewrite the formula to find voltage. the formula for electrical power (p, in watts) is where v is the voltage in volts and r is the resistance in ohms. for a particular brand of water heater, r is 32 ohms and p is 0.5 watts. the formula to find v is , and the voltage at which the heater operates is volts.

What is sin 7x/4 ? i need on this urgent trig