Polar Form of Complex Numbers Answers

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The equation r = −2 represents graph .

The equation r = 3 represents graph .

The equation represents graph .

If a = 0 and b ≠ 0, then the graph is shaped like a .

circle with diameter b

closed curve with a dimple

closed curve with a loop inside it

If a < b, then the graph is shaped like a .

circle with diameter b

closed curve with a dimple

closed curve with a loop inside it

Which graph represents r = −1 + 3 sin(θ)?

Option

A sound engineer is positioning a cardioid microphone for a music concert. Which equation corresponds to a microphone facing the correct direction?

r = −4 + 4 sin(θ)

r = 4 − 4 sin(θ)

r = −4 + 4 cos(θ)

r = 4 − 4 cos(θ)

If a > b, then the graph is shaped like a .

circle with diameter b

closed curve with a dimple

closed curve with a loop inside it

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