The formula for voltage (in volts) is given by v = ir, where i is the current in amperes, and r is the resistance in ohms. if a light bulb uses 0.4 amperes of current at a voltage of 1.8 volts, the formula to find r is , and the resistance of the bulb is ohms.

answer: 177/8

step-by-step explanation:

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2