Trig Geometry 30 45 60 Easily Remember the Exact Values

Trig  Geometry  30 45 60 Easily Remember the Exact Values
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Year after year from Geometry to Calculus, my students always forgot the trig basics. What is the sin 60, cos pi/6, tan 45?? They drew circles with their fingers in the air, hold their right hands out and stare at their palms, or reach for their calculators or phones.

Now they take a scrap of paper and as simply as 123, write the shortcut out in less than a minute and have every answer they need and with a little thinking can give me every common angle around the Unit Circle.

I must hear OMG, Mrs K Thank you....100's of times every semester, and on notes or emails they send from college. "Thank you for the 123 method, I'm not allowed to use a calculator at UF".

Now for just $1 you can have this secret method on a printable handout to share with your students. Now you can hear all the Thank You's, too.

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1
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Trig  Geometry  30 45 60 Easily Remember the Exact Values