CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

sin263+sin227cos217+cos273
  1. \N
  2. 1
  3. 12


Solution

The correct option is B 1
We know that

sin θ=cos(90θ), and 

cos θ=sin(90θ)

Now the given expression is 
sin263+sin227cos217+cos273

sin 27=cos(9027)sin 27=cos 63

and, 
cos 17=sin(9017)cos 17=sin 73

sin263+sin227cos217+cos273=sin263+cos263sin273+cos273

Now we know that sin2θ+cos2θ=1

sin263+cos263sin273+cos273=11=1

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


People also searched for
View More



footer-image