Chapter 5: Problem 90
What is the amplitude of the sine function? What does this tell you about the graph?
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Chapter 5: Problem 90
What is the amplitude of the sine function? What does this tell you about the graph?
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Use a right triangle to write each expression as an algebraic expression. Assume that \(x\) is positive and that the given inverse trigonometric function is defined for the expression in \(x\). $$ \sec \left(\cos ^{-1} \frac{1}{x}\right) $$
Determine the domain and the range of each function. $$ f(x)=\cos ^{-1}(\cos x) $$
Explain how to find the radian measure of a central angle.
We will prove the following identities: $$\begin{array}{l} {\sin ^{2} x=\frac{1}{2}-\frac{1}{2} \cos 2 x} \\ {\cos ^{2} x=\frac{1}{2}+\frac{1}{2} \cos 2 x} \end{array}$$ Use the identity for \(\sin ^{2} x\) to graph one period of \(y=\sin ^{2} x\)
Use a graphing utility to graph two periodsof the function. Use a graphing utility to graph \(y=\cos x\) and \(y=1-\frac{x^{2}}{2}+\frac{x^{4}}{24}\) in a \(\left[-\pi, \pi, \frac{\pi}{2}\right]\) by \([-2,2,1]\) viewing rectangle. How do the graphs compare?
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