SOLUTION: Prove the identity: {{{cot^""(A)}}}{{{""-""}}}{{{tan^""(A)}}}{{{""=""}}}{{{2cot^""(2A)}}}

SOLUTION: Prove the identity: {{{cot^""(A)}}}{{{""-""}}}{{{tan^""(A)}}}{{{""=""}}}{{{2cot^""(2A)}}}

Algebra.Com

Question 1056804: Prove the identity:

Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!




Work with the right side:







Use formula for tan(2A)



Invert the second and multiply:







Break into two fractions:







Edwin

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