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Exam
If (cosθ)^2 -(sinθ)^2=1/3, value of [(cosθ)^4-(sinθ)^4+1] is:
(A) 4/3
(B) 5/3
Read Solution (Total 2)
-
- (cosI)^4-(sinI)^4=[(cosI)^2-(sinI)^2][(cosI)^2+(sinI)^2]
1/3*1=1/3
So 1/3+1=4/3.
Ana:A.4/3. - 11 years agoHelpfull: Yes(0) No(0)
- 4/3
- 11 years agoHelpfull: Yes(0) No(0)
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