Question

Just the answer please.
1: http://imgur.com/4ZgASEX
2: http://imgur.com/4kkI2RI
3: http://imgur.com/vcazUNQ

Answer 1

Answer on Question #59339 – Math – Trigonometry

Just the answer please.

Question

Evaluate $\cos^{-1}\frac{1}{2}$.

$\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad$

Answer: $\cos^{-1}\frac{1}{2} = \frac{\pi}{3}$ or $60{}^{\circ}$.

Question

How many solutions does $\tan^{-1}3$ have in the interval $[0, 2\pi)$?

Infinite

2

1

Answer: $\tan^{-1}3$ has one solution in the interval $[0,2\pi)$.

Question

Which equation is represented by the intersection of the graphs below?

$$csc x = 0$$ $$sec x = 0$$ $$csc x = 1$$ $$sec x = 1$$

Answer: sec x = 1 is represented by the intersection of the graphs.

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