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Using trig identities to verify an identity

2,044 views · Published 28 March 2012 · 3:33 · Indexed 24 October 2026

Channel: Brian McLogan · 2012 · Education

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👉 Learn how to verify trigonometric identities involving the addition and subtraction of terms. To do this it is usually useful to convert the addition or subtraction terms in terms of one trigonometric function and then evaluate.  Another very useful method is to convert all terms to the equivalent sine and cosine functions and then simplify.

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Organized Videos:
✅ Verify Trigonometric Identities
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMos0wJjgo2eAIU0pwSOJiFO
✅ Verify Simple Trigonometric Identities
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMpz2HcKBer2ZvSJukha_c-N
✅ Verify Trigonometric Identities with Rational Expressions
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMrpLos0wctDmyZ2CUAWqrxN
✅ Verify Trigonometric Identities by Multiplying
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMoXcPHJcaeY2T39zP9YxGbn
✅ Verify Trigonometric Identities by Adding and Subtracting
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMoZqv87EvOZMrDTvYv9Q9wI
✅ Verify Trigonometric Identities with Fractions
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMppMSO7qBzxCz7fOBwiqA_6
✅ Verify Trigonometric Identities by Pythagorean Identities
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMq17Jbf1tWpi7fGFuL5fBAv

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