Trigs Quiz

Which graph would have a frequency of 2 and a maximum value of −4?

• 𝑓(𝑥) = 3 cos⁡(4𝜋𝑥)+7

• 𝑎(𝑥) = 3 cos⁡(1/4𝜋𝑥)−7

• 𝑔(𝑥)=3 cos⁡( 4𝜋𝑥)−7

• 𝑎(𝑥)=3 cos⁡(1/4𝜋 𝑥)+7

Let there be an angle 𝜑 such that 𝜋/2 < 𝜑 < 𝜃.

Which statement is true?

• sinφ < sinθ

• cosθ < cosφ

• tanφ < tanθ

• sinφ > sinθ

Which graph is equivalent to y = sinx?

• f(x) = cos(x + π)

• g(x) = cos(x − π)

• h(x) = cos(x + π/2)

• j(x) = cos(x - π/2)

• none of these

• 8

• 4

• 2

• 1

The exact value of  $\sin\ 22\frac{1}{2}^o=.\ .\ .$  

•  $\sqrt{\frac{2+\sqrt{3}}{2}}$  

•  $\sqrt{\frac{2-\sqrt{3}}{2}}$  

•  $\frac{1}{2}\sqrt{2+\sqrt{3}}$  

•  $\frac{1}{2}\sqrt{2+\sqrt{2}}$  

•  $\frac{1}{2}\sqrt{2-\sqrt{2}}$