Trigonometric Hand Trick This is an easy way to remember the values of common values of trigonometric functions in the first quadrant.

Math Trigonometry sin cos Trigonometric Hand Trick This is an easy way to remember the values of common values of trigonometric functions in the first quadrant.

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Interesting show - how calculate the value of the sine, cosine, tangent and cotangent of the angle 0◦, 30◦, 45◦, 60◦, 90◦. The fingers are numbered seq... - Matematyka - Matematyczny Świat wokół nas. - Google+

Interesting show - how calculate the value of the sine, cosine, tangent and cotangent of the angle

Таблица умножения на твоих руках

Таблица умножения на твоих руках

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