TCAP Success ALGEBRA 2 EOC Chapter 17

DOK: 1
1 pt

1.

What is the value of the expression sin θ × cos θ when θ = 45°?

A

$-\frac{\sqrt{2}}{2}$

B

$-\frac{1}{2}$

C

$\frac{1}{2}$

D

$\frac{\sqrt{2}}{2}$

DOK: 3
1 pt

3.

A ray starting at the origin of a coordinate grid makes an angle of θ radians with the positive half of the *x*-axis and intersects a circle with diameter 64 at the point $(16\sqrt{3},-16)$.
What is the value of θ?

A

30°

B

60°

C

120°

D

330°

DOK: 1
1 pt

5.

tan(150°) =

A

$\sqrt{3}$

B

$\frac{-3}{\sqrt{3}}$

C

$\frac{-\sqrt{3}}{3}$

D

$\frac{\sqrt{3}}{3}$

DOK: 1
1 pt

7.

140° is equivalent to how many radians?

A

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

B

$\frac{7\mathrm{\pi}}{9}$

C

$2\mathrm{\pi}$

D

$\frac{5\mathrm{\pi}}{4}$

DOK: 1
1 pt

9.

Find sin *A* if angle *A* lies in quadrant IV and cos $A=\frac{1}{4}$

A

$\mathrm{sin}A=\frac{\sqrt{15}}{4}$

B

$\mathrm{sin}A=-\frac{\sqrt{15}}{4}$

C

$\mathrm{sin}A=4$

D

$\mathrm{sin}A=-4$