Practice Set 6
10 Readiness Check Questions
This set focuses on steady accuracy across familiar-angle values, transformed graphs, simple trig equations, and periodic models.
Practice Questions
Mixed Readiness Check: Trig Review
Use this final set as a quick readiness check on angle measure, graph features, equation solving, and periodic interpretation.
Question 1
What is sin 270°?
Desmos Move: Sine is the y-coordinate, so use the bottom of the unit circle.
Question 2
Which radian measure is equivalent to 60°?
Desmos Move: Since 180° equals π, divide both by 3 to match 60°.
Question 3
What is the amplitude of y = -4 cos(x) + 7?
Desmos Move: Amplitude is always the absolute value of the trig coefficient.
Question 4
A trig graph has a maximum of 13 and a minimum of 5. What is the midline value?
Desmos Move: Average the maximum and minimum to find the midline.
Question 5
On 0° to 360°, which values solve cos(x) = -1/2?
Desmos Move: Use the 60° reference angle, then place the cosine values where x-coordinates are negative.
Question 6
Which equation has period π?
Desmos Move: A period of π means the graph repeats twice as fast as the parent sine function.
Question 7
A sound wave repeats every 0.5 seconds. Which statement is true?
Desmos Move: The period is the repeat time, even when the time value is small.
Question 8
Which statement best describes y = cos(x - π) ?
Desmos Move: A subtraction inside the function shifts the graph to the right.
Question 9
How many degrees are in π/2 radians?
Desmos Move: π radians is 180°, so half of π is half of 180°.
Question 10
Which skill is most important when reading a transformed trig graph on the EOC?
Desmos Move: Desmos is most helpful when you compare the repeating width, center line, and peak distance all at once.