Question

Just the answer please.
1: http://imgur.com/DC3czAe

2: http://imgur.com/hAvoRZy

Answer 1

Answer on Question #58628 – Math – Trigonometry

Question

Which scenario describes periodic behavior?

The movement of the hands on a clock

The takeoff and landing of a jet plane

The flight of a football during a pass

The path a dolphin swims in the ocean

Answer: The movement of the hands on a clock.

Remark. 'The path a dolphin swims in the ocean' sometimes describes periodic behavior.

Question

At which value will the graph of $y = \cot x$ have a zero?

$$\frac {\pi}{3}$$ $$\frac {\pi}{2}$$ $$\frac {\pi}{4}$$

None of the above are correct.

Answer: The graph of $y = \cot(x)$ will have a zero at $\frac{\pi}{2}$.

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