Step-by-step explanation:
(2)
cos(2θ) tan θ + sin θ = 0
tan θ (cos(2θ) + cos θ) = 0
tan θ = 0
θ = kπ
cos(2θ) + cos θ = 0
cos(2θ) = -cos θ
cos(2θ) = cos(π − θ)
2θ = π − θ + 2kπ
3θ = (2k + 1) π
θ = (2k + 1) π / 3
Therefore, θ = kπ or (2k + 1) π / 3.
(3)
2 cos² θ − 2 cos²(2θ)
Power reduction formula:
1 + cos(2θ) − (1 + cos(4θ))
cos(2θ) − cos(4θ)
Answer:
0.333
Step-by-step explanation:
Answer:
Hey there!
There are four 1/4 inch long sections in 1 inch. Thus, in four inches there would be 16 of those sections.
16+1=17
Thus, in 4 1/4 inches of rope, there are 17 sections of 1/4 inches.
Hope this helps :)
Answer:
D) x+8
Step-by-step explanation:
The factors of x2 + 5x – 24 are (x-3) and (x+8)
That is f(x)+g(x)
or
x^2+x-2+x-1=x^2+2x-3
the domain is the numbers we can use
it is all real numbers