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(sinAcosB+cosAsinB)/(cosAcosB-sinAsinB)=(tanA+tanB)/(1-tanAtanB) Prove this identity is true?
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Dhanalakshmi
May 25, 2019, 11:19am
1
(sinAcosB+cosAsinB)/(cosAcosB-sinAsinB)=(tanA+tanB)/(1-tanAtanB)
Prove this identity is true?