Sketch the function on the graph below.
Table of contents
- 0. Review of College Algebra4h 43m
- 1. Measuring Angles40m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
- OLD 1. Angles and the Trigonometric Functions Coming soon
- OLD 2. Trigonometric Functions graphs, Inverse Trigonometric Functions Coming soon
- OLD 3. Trigonometric Identities and Equations Coming soon
- OLD 4. Laws of Sines, Cosines and Vectors Coming soon
- OLD 5. Complex Numbers, Polar Coordinates and Parametric Equations Coming soon
- NEW (not used) 7. Laws of Sines, Cosines and Vectors Coming soon
- NEW (not used) 8. Vectors Coming soon
- NEW(not used) 9. Polar equations Coming soon
- NEW (not used) 11. Graphing Complex Numbers Coming soon
4. Graphing Trigonometric Functions
Graphs of the Sine and Cosine Functions
Multiple Choice
Given below is the graph of the function y=sin(bx). Determine the correct value for b.

A
b=π
B
b=2
C
b=21
D
b=4
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Verified step by step guidance1
First, identify the period of the function y = \(\sin\)(bx) from the graph. The period is the distance between two consecutive peaks or troughs.
Observe the graph and note that the function completes one full cycle between x = 0 and x = \(\frac{\pi}{2}\). This indicates that the period of the function is \(\frac{\pi}{2}\).
Recall the formula for the period of the sine function y = \(\sin\)(bx), which is given by \(\frac{2\pi}{b}\). Set this equal to the observed period: \(\frac{2\pi}{b}\) = \(\frac{\pi}{2}\).
Solve the equation \(\frac{2\pi}{b}\) = \(\frac{\pi}{2}\) for b. Start by cross-multiplying to get 2\(\pi\) = b \(\cdot\) \(\frac{\pi}{2}\).
Divide both sides by \(\pi\) to isolate b, resulting in b = 4.
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