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Evaluating Inverse Trigonometric Functions Without Using the Calculator - Example 2 ( Video ) | Trigonometry | CK-12 Foundation
Using inverse trig functions with a calculator (video) | Khan Academy
SOLVED: Inverse Trig Functions Trig Identities anc Equations Make sure your answer is in degrees. You should be able to find this without a calculator: 51 sin "1 2 [? ]8