![]() ![]() 45°-45°-90° triangle:Since the three interior angles of a triangle add up to 180 degrees you can always calculate the third angle like this: Let's suppose that you know a triangle has angles 90 and 50 and you want to know the third angle. This type of triangle can be used to evaluate trigonometric functions for multiples of π/6. As can be seen from the above, knowing just one side of a 30°-60°-90° triangle enables you to determine the length of any of the other sides relatively easily. The six primary Trig FUNCTIONs with domains as angles and answers ranging between -90° to 90°. Conic Sections: Parabola and FocusTrigonometric functions are complex numbers that can be calculated from the coordinates of a right triangle. Six trigonometric functions calculatorTrigonometry: All the Trig Functions.
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