Question

The value of 1°c
10cis​

Answer 1

Answer:

We have,

9!

1

+

10!

1

=

11!

x

⇒

9!

1

+

10×9!

1

=

11×10×9!

x

⇒

9!

1

[1+

10

1

]=(

11×10

x

)×

9!

1

⇒1+

10

1

=

11×10

x

⇒

10

11

=

11×10

x

⇒x=11×11=121

Answer 2

Answer:

The value of (1 + √3i/1 - √3i)10 is ___ (a) cis 2π/3 (b) cis 4π/3 (c) -cis 2π/3 (d) -cis 4π/3Read more on Sarthaks.com - https://www.sarthaks.com/867987/the-value-of-1-3i-1-3i-10-is-a-cis-2-3-b-cis-4-3-c-cis-2-3-d-cis-4-3?show=867998#a867998

answer= option A