How to remember the values of sin 60, sin 30, sin 45, etc?

A very simple and easy way to remember the values of sin 60, sin 30, sin 45 etc that you will not forget ever is by using taking square roots of 0/4, 1 / 4, 2/4, 3 /4 etc. Going backwards will give you cos.

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How to remember the values of sin 60, sin 30, sin 45, etc?

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