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How to find the exact value of each trigonometric function without a calculator?
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How to find the exact value of each trigonometric function without a calculator?

User Andrei Beziazychnyi
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remember them is the best way to go.
draw the exact value triangles if you're unsure, but importantly, you just need to memorise these exact values.


How to find the exact value of each trigonometric function without a calculator?-example-1
User Mkafiyan
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