TRIGONOMETRY
posted by Kate .
Can you check my work, please? This is for a trig study guide for my final next week. I'd like to know if I'm doing this right. :)
2. The polar coordinates of a point are given. Find the rectangular coordinates of each point.
a. (5,(π / 4))
b. (2,(π / 6))
Answer:
a. x = M cos θ
x = 5(cos π/4)
x = 5(0.707)
x = 3.535
y = M sin θ
y = 5(sin π/4)
y = 5(0.707)
y = 3.535
(5,(π / 4)) = (3.535, 3.535)
b. x = M cos θ
x = 2(cos π/6)
x = 2(0.866)
x = 1.732
y = M sin θ
y = 2(sin π/6)
y = 2(0.5)
y = 1
(2,(π / 6)) = (1.732, 1)
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