Home
Class 11
MATHS
[" (i) "cos^(3)A+cos^(3)((2 pi)/(3)+A)+c...

[" (i) "cos^(3)A+cos^(3)((2 pi)/(3)+A)+cos^(3)((4 pi)/(3)+A)],[=(3)/(4)cos3A]

Promotional Banner

Similar Questions

Explore conceptually related problems

cos^(2)((3 pi)/(5))+cos^(2)((4 pi)/(5))=

Prove that: cos^(3)A + cos^(3)((2pi)/(3)+A) + cos^(3)((4pi)/3+A) = 3/4 cos3A

Prove that: cos^(2)A+cos^(2)(A+(2 pi)/(3))+cos^(2)(A-(2 pi)/(3))=(3)/(2)

cos A+cos((4 pi)/(3)-A)+cos((4 pi)/(3)+A)=0

cos ^(2) (3 pi)/(5)+cos ^(2) (4 pi)/(5)=

Prove that cos^(2)x+cos^(2)(x+(pi)/(3))+cos^(2)(x-(pi)/(3))=(3)/(2)

Prove that cos^(2)x+cos^(2)(x+(pi)/(3))+cos^(2)(x-(pi)/(3))=(3)/(2)

Prove that: cos^(2)A+cos^(2)(A+(pi)/(3))+cos^(2)(A-(pi)/(3))=(3)/(2)

Prove that cos^(3)x+cos^(3)((2pi)/3+x)+cos^(3)((2pi)/3-x)=3/4 cos 3x

cos^(2)""(3pi)/(5)+cos^(2)""(4pi)/(5)=