Given the equation 1/2(b × h), the area of a triangular roof section with a base of 7 feet and a height of 3.5 feet is _____.
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Answer:
Step-by-step explanation:
Given
Represent point A as thus;
Required
Determine the new position of A, when rotated counterclockwise
The new position will be denoted as A'
When a point is rotated counterclockwise, we start by switching the positions of x and y as follows:
Then, y is negated to give A'