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geometry - How can I calculate $\alpha=\arccos\left(-\frac{1}{4}\right)$ without using a calculator? - Mathematics Stack Exchange
![SOLVED: Without the aid of a calculator, evaluate the given expressions: cos(tan(sin^(-1)(2))) arcsin(1) arccos(-1) arctan(-8) arccos(1) 7.0 * arcsin(1) SOLVED: Without the aid of a calculator, evaluate the given expressions: cos(tan(sin^(-1)(2))) arcsin(1) arccos(-1) arctan(-8) arccos(1) 7.0 * arcsin(1)](https://cdn.numerade.com/ask_images/6d7184e1ee6e4216be1912ddcb9f64cd.jpg)
SOLVED: Without the aid of a calculator, evaluate the given expressions: cos(tan(sin^(-1)(2))) arcsin(1) arccos(-1) arctan(-8) arccos(1) 7.0 * arcsin(1)
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Trigonometry Functions & Exponentials on the CLEP Calculator - Video & Lesson Transcript | Study.com
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