Inverse Sine, Cosine, and Tangent on Ubuntu Calculator

I am studying Physics, and I need a calculator that has Sine, Cosine, and Tangent. Ubuntu Calculator(gnome-calculator) is a pretty good choice for me because it has all kinds of capabilities. But there is only one problem. I cannot find the sin^-1, cos^-1 and tan^-1 buttons.
Calculator Screenshot:

1 Answer

You can use the Inverse (x^-1) button:

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