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Prove that sec theta - sin theta tan theta = cos theta |
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Answer» Step-by-step EXPLANATION: =sec◆ - sin◆ tan◆ =[sec◆ = 1/cos◆]. [tan◆ = sin◆/cos◆] =1/cos◆ - sin^2◆/cos◆ =[cos^2◆ = 1 - sin^2 ◆] =(1 - sin^2 ◆)/cos◆ =cos^2◆/ cos◆ =cos◆ =R.H.S. PROVED |
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