Unit Circle 30 45 60 Easily Remember the Exact Special Values
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Description
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 1-2-3, 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 1-2-3 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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COPYRIGHT TERMS: ©2017-2023 Joan Kessler (joansworldofmath™). This resource may not be uploaded to the internet in any form, including classroom/personal websites or network drives, unless the site is password protected and can only be accessed by students.
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