wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

If cos A + cos2 A = 1, then (sin2 A + sin4 A) = ?
(a) 1
(b) 2
(c) 3
(d) 4

Open in App
Solution

(a) 1
cosA+cos2A=1=>cosA=1cos2A=>cosA=sin2A (1cos2A=sin2)=>cos2A=sin4A (Squaring both sides)=>1sin2A=sin4A=> sin4A+sin2A=1

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Implicit Differentiation
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon