Section Warm-Up
In this section we will be using our calculators to generate the curves of the sine, cosine and tangent functions. Let’s make sure you know how to enter these into your calculator to get the correct answer.
Think & Click: Section Warm-Up
Complete the Think & Click activity by looking at each problem below, thinking about it, and then clicking on the question to reveal the solution.
Solve for X or Y in the following questions.
1. y = sin 30°
y = 0.5
2. y = cos 90°
y = 0
3. y = tan 60°
y ≈ 1.73
4. y = cos 30°
y ≈ 0.87
5. y = sin(-60)°
-0.87
6. 0.5 = cos x°
cos-10.5 = cos-1(cos x°)
60 = x
7. 1 = tan x°
tan-11 =tan-1( tan x°)
45 = x
