Answer:None of the given choices
cos θ = sqrt(3) / 2
Explanation:cos 2θ + cos 2θ = 1
2 cos 2θ = 1
cos 2θ = 0.5
Now, to get the value of θ, we would need to use the rules of double the angle attached in the figure.
I will use:
cos 2θ = 2 cos²θ - 1
Substitute with cos 2θ = 0.5 and solve for cos θ as follows:
cos 2θ = 2 cos²θ - 1
0.5 = 2 cos²θ - 1
2cos ²θ = 0.5 + 1 = 3/2
cos²θ = 3/4 = 0.75
cos θ = ±√0.75
Since we are given that θ is acute, therefore, θ belongs to the first quadrant which means that cos θ is positive
Based on the above:
cos θ = √0.75 = √3 / 2
Hope this helps :)
Answer:
No solutions
Step-by-step explanation:
18-30w=20-10w-20w
18-30w=20-30w
18-20=30w-30w
-2 does not equal to 0
No solutions
Answer:
Where is the cylinder?
Step-by-step explanation:
Sorry, cannot determine the solution to this problem. Unless, if it is pi times r squared times the height of the shape.
I don't think it really matters if there's a dash there or not
Answer:
45
Step-by-step explanation:
Lol the internet has a calculator for thisssss