Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • sin^ pi/8 +sin^4 3pi/8 + sin^4 5pi/8 +sin^4 7pi/8=?

sin^ pi/8 +sin^4 3pi/8 + sin^4 5pi/8 +sin^4 7pi/8=?

Answers (1)

best_answer

Solution:     We have ,

                 sin^4 fracpi8 +sin^4 frac3pi8 +sin^4 frac5pi8+sin^4 frac7pi8

                 sin^4 fracpi8 +sin^4 frac3pi8 =1-frac12sin^2fracpi4=frac34

   Similarly ,    sin^4 frac7pi8 +sin^4 frac5pi8 =frac34

         ecause           sin^4(fracpi8)+sin^4(frac3pi8)+sin^4(frac5pi8)+sin^4(frac7pi8)=frac32.

Posted by

Deependra Verma

View full answer

Similar Questions

Latest Question