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Simplify the trigonomic expression by using identities. tan19pi/78-tanpi/13 over 1+tan19pi/13. All a fraction. If you could show steps plz!?

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  • Simplify the trigonomic expression by using identities. tan19pi/78-tanpi/13 over 1+tan19pi/13. All a fraction. If you could show steps plz!?


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