◆ COMPLEX NUMBERS ◆
125 ( cos 288 + i sin 288 ) can be written as -
125.e^i( 288)
125.e^i( 288 +360 )
125.e^i( 288+ 720)
[ As , multiples of 360 can be added to an angle without changing any trigonometric functions or sign ]
To find the cube root , take the cube root of above 3 expressions ,
We get -
5 e^( i 96 )
5 e^( i 216 )
5 e^( i 336 )
Now using Euler's formula , We rewrite above as -
5 ( cos 96 + i sin 96 )
5(c os 216 + i sin 216 )
5 ( cos 336 + i sin 336 ) Ans.
Answer:
Image B shows a reflection.
Answer:
27 years
Step-by-step explanation:
21 × 2 = 42
42 - 15 = 27
Answer:
x=2 and y=3.
Step-by-step explanation:
Let the one number be x and the other number be y.
ATQ, 2x=1+y and x+y=5. x=2 and y=3.
Answer:
The distance from Gary's school to the BART station is 564 yards
Step-by-step explanation:
Let
x ----> the distance from Gary's school to the corner market
y ----> the distance from Gary's school to the BART station
we have

we know that
To find out the distance from Gary's school to the BART station, multiply the distance from Gary's school to the corner market by 12
so

substitute the value of x

therefore
The distance from Gary's school to the BART station is 564 yards