Quiz about Trigonometry

Question 1

An equation is shown, where $$0 < x < 90$$ and $$0 < y < 90$$. $$\cos (x^{\circ})=\sin (y^{\circ})$$

Create an expression for $$x$$ in terms of $$y$$.

Accepted Answer

Covalent bond

Answer

$$x=90-y$$

Answer

$$x=90+y$$

Answer

$$ x=\sin y$$

Answer

$$y=\sin x$$

Question 2

In triangle $$A B C, \angle A$$ and $$\angle B$$ are complementary, where $$\cos A=0.5$$.

What is the measure, in degrees, of $$<B$$ ?

Accepted Answer

Covalent bond

Answer

$$30^{\circ}$$

Answer

$$60^{\circ}$$

Answer

$$120^{\circ}$$

Answer

$$45^{\circ}$$

Question 3

A triangle is shown.

![](http://admin.getprephub.com/media/editor/d11_20230225224217403941.png)
What is the length, in inches (in.), of side $$a$$ ?

Accepted Answer

Covalent bond

Answer

22

Answer

88

Answer

12

Answer

44

Question 4

A right triangle $$A B C$$ is shown.

![](http://admin.getprephub.com/media/editor/d2_20230225223522255316.png)

What is $$\cos A$$ ?

Accepted Answer

Covalent bond

Answer

$$\frac{8}{17} $$

Answer

$$\frac{15}{17} $$

Answer

$$\frac{8}{15} $$

Answer

$$\frac{17}{8}$$

Question 5

Triangle $$A B C$$ is shown.

![](http://admin.getprephub.com/media/editor/r21_20230225230847290090.png)
What is $$	an ({A})$$ ?

Accepted Answer

Covalent bond

Answer

$$\frac{5}{13}$$

Answer

$$ \frac{5}{12}$$

Answer

$$\frac{12}{13}$$

Answer

$$\frac{13}{5}$$

Ohio State Trigonometry Precalculus Maths Problems and Solutions