Learn to find the missing angles for a triangle using inverse trig functions
Evaluating Inverse Trigonometric Functions
Example: Calculator to evaluate inverse trig function | Trigonometry | Khan Academy
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Learn How to Find the Angle Given the Inverse Cosine of a Value
Inverse Trigonometric Functions
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The Inverse Sin Key (sin-1). How To Work Out An Angle Using Inverse Sine Casio Classwiz Calculstor
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Use a Calculator to Find Angle Theta (Nearest Tenth of Degree) if Theta is Acute & sin(theta)=0.9465