Special angle is the angle to the value that can be determined Trig comparison value without using a calculator. The following table special angles:
To make it easier to remember, we can use your finger memorizing trigonometric comparison value these special corners. Consider the following picture.
Determine the comparative value trigonometric sine special corners by using the left hand rule
determine the comparative value trigonometric cosine special corners by using the left hand rule
whereas, for value comparison trigonometric tangent of the corners of our special look for it by dividing the value of sine cosine of the angle we're looking for the value of its tangent.
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