Answer:
The most straightforward way to obtain the expression for cos(2x) is by using the "cosine of the sum" formula: cos(x + y) = cosx*cosy - sinx*siny. cos(2x) = cos² (x) - (1 - cos²(x)) = 2cos²(x) - 1. = 2cos²(x) - 1.
Step-by-step explanation:
Answer:
1032x176x67x890x30x6x8
1032×176×67×890×30×6×8x^6
1.56^13×x^6
Answer:
Subtract 9 from each side of the equation
Step-by-step explanation:
m+9=-2
-9 -9
m=-11
Answer:
-21
Step-by-step explanation:
In the term -21xy, -21 is the coefficient. It comes before the variables that are x and y.
