Trigonometry Identities I Introduction - Math Plane

Step 1: Factor the left side to see if it leads to anything. Step 2: Combine the elements on the light side. Step 3: Move everything to one side and factor. Tan X Check Tan cot 2Cos x - cosx-2 cosX(2Cosx- ) 2Cosx cosx 2Cosx cos x (2Cosx cosx (2Cosx - (2Cosx (2Cosx ) cos x ) x ) X cosx cosx (distributive property to rearrange and regroup) 0 ................
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