How to find the cosine of an angle

Practice Questions

ACT Math › How to find the cosine of an angle

Questions

6

1

Right triangle $\Delta ABC$ has sides , and $AC = \sqrt{74}$ . What is the cosine of $\angle A$ ?

2

What is cos θ?

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3

Right triangle $\Delta ABC$ has sides , $BC = 5\sqrt{11}$ and . What is the cosine of $\angle A$ ?

4

What is the $\cos$ of an angle with $\sin \left ( \frac{4}{5} \right )$ ?

5

What is the cosine of the angle formed between the -axis and the line passing through with a slope of ? Round to the nearest hundredth.

6

If $\tan A=\frac{b}{c}$ , where $b>0\ and\ c>0$ and $\frac{\pi }{2}<A<\pi$ ,

then what is $cos\ A$ ?

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