Write a function for a rotation 90 degrees counter clockwise about the origin, point 0
1 answer:
Answer:
90° counter clockwise rotation of point 0(x, y) about origin = (-y, x)
Step-by-step explanation:
Following are the rules for a counter clockwise rotation of 90 degrees about the origin for a point O(x,y):
1. Invert the sign of the value of y.
2. Switch x and y with each other.
For example, a point A(5,2) after rotation gives a point B(-2,5) using the rules given above. The points on the x-y plane are shown in the image attached.
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Answer:
b.
Step-by-step explanation:
The given geometric series is;
The first term of this series is
The common ratio is
The sum to infinity of this series is
Substitute the given values to obtain;
This implies that;