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– Do you need help with Trigonometry? Get help with Trigonometric Expressions – WebMath will simplify a trigonometric expression. Type your expression into the box. Your expression may contain sin, cos, tan, sec, etc. When you click the button, the page will try to apply 25 different trig. identities that it knows about to simplify your expression. As an example, try typing sin(x)^2+cos(x)^2 and see what you get. Get help with Calculate Quantity of a Right TrianglesRight triangles are the foundation of trigonometry. WebMath page will show you how to calculate just about anything dealing with right triangles. 1. Type in anything you know (numbers only!) about your triangle into any relevant box as you have. 2Put a ?in the box of the item that you are trying to find. 3. Click the “Go…” button. This page will show you how to figure out what the box that you marked as “?” should be.  

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