A square has a rotational symmetry of how many degrees?
2 answers:
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Answer:
As θ increases, the value of cos θ decreases
Step-by-step explanation:
As as θ increases, the value of cos θ decreases from 1 to -1 in the first two quadrants ( between 0 and 180 degrees). Cos(0) = 1, cos(90) = 0, cos(180) = -1.
On the other hand, as θ increases from 180 to 360 degrees (last two quadrants) the value of cos θ increases from -1 to 1.
Check the attachment below:
Answer:
Step-by-step explanation:
Given
Shape: Trapezoid
Required
Determine the length of the second parallel side
The area of a trapezoid is:
Substitute values for Area, Height and Side1
Multiply both sides by 2
Divide both sides by 18
Hence;
<em>The length of the second parallel side is 17cm</em>