Chapter 1: Problem 27
\(t=\frac{4 \pi}{3}\)
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Chapter 1: Problem 27
\(t=\frac{4 \pi}{3}\)
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$$ \text { In Exercises 49-58, find the exact value of the expression. } $$ $$ \sin \left[\arccos \left(-\frac{2}{3}\right)\right] $$
In Exercises 19-34, use a calculator to evaluate the expression. Round your result to two decimal places. $$ \arctan 2.8 $$
In Exercises 1-16, evaluate the expression without using a calculator. $$ \arcsin \frac{\sqrt{2}}{2} $$
In Exercises 43-48, use the properties of inverse trigonometric functions to evaluate the expression. $$ \arcsin (\sin 3 \pi) $$
True or False? In Exercises 98-100, determine whether the statement is true or false. Justify your answer. $$ \sin \frac{5 \pi}{6}=\frac{1}{2} \quad \square \quad \arcsin \frac{1}{2}=\frac{5 \pi}{6} $$
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