Lesson 12: Proving Trigonometric Identities


Lesson on proving trigonometric equations using trigonometric identities. To prove a trigonometric equation, it must be shown that the left side is the same as the right side. To do that, using the necessary trigonometric identities and algebraic methods are needed. 

1:25 sincot = cos
2:20 tanB + cotB = secBcscB

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Part 2: Proving Identities