Question 1. question 2. and question 3. Thanks! :)
The answer is:
(x-5 - sq root 29) (x-5 + sq root 29)
Hello :
by idetity : 1+cos(2a) = 2cos²(a)
let : a = <span>θ/2
1+cos(2×</span>θ/2)=2cos²(θ/2)
1+cos(θ) = 2cos²(θ/2)
solve : 2 cos^2 (θ/2) - 3 cos(θ) = 0 ......(1)
(1) : 1+cos(θ)-3 cos(θ) =0
2cos(θ) = 1
cos(θ) = 1/2
in : [0, 2π<span>[
</span>( θ = π/3) or (θ = 5π/3)
Answer:
answer will be ?= 5x2y-10xy+9
To help solve this problem, we can use a simple equation.
32 + x = 208. Subtract 32 from both sides.
x = 176.
32 + 176 = 208