Home
Class 12
MATHS
cos^(-1)(cos""(8pi)/(5))=...

`cos^(-1)(cos""(8pi)/(5))=`

Promotional Banner

Similar Questions

Explore conceptually related problems

The value of (1+cos ""(2pi)/(15))(1+cos""(8pi)/(15))(1+cos""(12pi)/(15))is

The value of cos(pi)/(5)cos.2(pi)/(5)cos4(pi)/(5)cos8(pi)/(5)=

cos(pi/5)cos((2pi)/5)cos((4pi)/5)cos((8pi)/5)=

(1 + cos"" (pi)/(8))(1 + cos"" (3pi)/(8)) (1 + cos"" (5pi)/(8))(1 + cos"" (7pi)/(8)) =

Find the value of: (1+cos""(pi)/(8))(1+cos""(3pi)/(8))(1+cos""(5pi)/(8))(1+cos""(7pi)/(8))=?

Prove that: (cos pi)/(5)(cos(2 pi))/(5)(cos(4 pi))/(5)(cos(8 pi))/(5)=(-1)/(6)

Prove that cos""(2pi)/7.cos""(4pi)/7.cos""(8pi)/7=1/8 .

cos""(2pi)/(15)cos""(4pi)/(15)cos""(8pi)/(15)cos""(16pi)/(15)=(1)/(16)

Prove that cos(2pi)/(15)cos(4pi)/(15)cos(8pi)/(15)cos(14pi)/(15)=1/(16)