Question

7. Transmission lines transmit a voltage of V volt to our
houses from power stations, then the power P supplied
by them is proportional to
1
1
(a)
(b) V
(d)
(c) V2
2
V
​

Answer 1

Answer:

x= 3y + 4z - 5x= 3y + 4z - 5

therefore x= 3y + 4z - 5

therefore

y - x= 3y + 4z - 5

therefore

y - 1 = z

sin(x-y)= sinxcosy- cosxsiny