Question

cosΘ + cos ( Θ+ 2π) + cos ( Θ+ 4π), cos(Θ) = -0.6

Answer 1

cos(a+b) = ?

Answer 2

cos(A + B) = cosAcosB - sinAsinB

M i correct @kikojuarez12 ?

Answer 3

@kikojuarez12 please reply

Answer 4

find the value of cosΘ + cos ( Θ+ 2π) + cos ( Θ+ 4π), cos(Θ) = -0.6

Answer 5

fin the value of this cosΘ + cos ( Θ+ 2π) + cos ( Θ+ 4π)

Answer 6

cos ( Θ+ 2π)

assuming that is theta

cos ( Θ+ 2π) =cos ( Θ)

2π is the same as 360 degrees thus Θ+ 2π= Θ

Answer 7

2pi = 0
pi = 0 ?

@completeidiot is that possible ?

Answer 8

sigh...
@mathslover you need to remember these are angles