Q.

1+cosπ8-i sinπ81+cosπ8+i sinπ88=

see full answer

Want to Fund your own JEE / NEET / Foundation preparation ??

Take the SCORE scholarship exam from home and compete for scholarships worth ₹1 crore!*
An Intiative by Sri Chaitanya

a

1

b

–1

c

2

d

12

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

  1+cosπ8-i sinπ81+cosπ8+i sinπ88

 =2cos2π16-i2sinπ16 cosπ162cos2π16+i 2sinπ16 cosπ168

 =2cosπ16cosπ16-i sinπ162cosπ16cosπ16+i sinπ168

 =cosπ16-i sinπ1616

    =cos π-i sin π =-1

Watch 3-min video & get full concept clarity
score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon