Question about Casio FX-115ES Scientific Calculator
Press the relevant function key [SIN],[COS],[TAN] followed by the angle value.
For inverse trigonometric functions [SIN^-1], COS^-1], or [TAN^-1], Press [SHIFT][SIN], [SHIFT][COS], or [SHIFT][TAN].
For other functions
When calculating trigonometric functions one must make sure that the angle unit the calculator is using is the correct one.
Posted on Aug 27, 2010
Cos 3/2 (A+B)
Posted on Oct 06, 2011
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Posted on Jan 02, 2017
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