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6:14
YouTube
MySecretMathTutor
Trigonometry - Checking trig identities using a calculator
When working with trig identities it can be difficult to tell if you have an equivalent expression. Fortunately your calculator can help in this process. Watch this video to see how you can use the calculator to check trig identities. For more videos please visit http://www.mysecretmathtutor.com
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