We know that

The cosine of the sum of two angles is defined by the following trigonometric identity

cos(A + B) = cos A cos B − sin A sin B
A=60°
B=105°
cos A=cos 60
cos B=cos 105
sin A=sin 60
sin B=sin 105

then
cos(60 + 105) = cos 60 cos 105 − sin 60 sin 105
cos(165) = cos 60 cos 105 − sin 60 sin 105

the answer is
cos (105°)

6 0

3 years ago

Jillana begins to solve a linear equation that results in a variable expression set equal to the same variable expression

RSB [31]

Answer:

the equation have infinite solutions

Step-by-step explanation:

if you have that x is equal to x (x=x) the only thing you really know nothing about it.

brainliest please ;)

5 0

3 years ago