The cosine of 30° is √3 / 2.
Since cosine is Adjacent over Hypotenuse, Hypotenuse = (2 / √3) * 9 = 18 / √3.
The cosine of 45° is √2 / 2.
Therefore, X = (2 / √2) * (18 / √3) = 36 / √6 = 18 / √1.5 = C
Answer:
9,0 0,9 -9,0 0,-9
Step-by-step explanation:
up down left right
Answer:
D. 245.
Step-by-step explanation:
If you take 1,085 cars and divide it by 31, and then take that answer and multiply it by 7 you get 245.
Answer:
Perpendicular
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Step-by-step explanation:
Given




Required
Is AB and CD parallel?
First, we need to calculate the slope (m) of AB and CD

For AB:


So:





For CD:


So:




For Lines to be parallel, the slope must be equal:
i.e. 
This condition is not true because:

For Lines to be perpendicular, the slope must be:

This implies:



<em>Hence, the lines are perpendicular</em>