Answer to Question #144316 in Trigonometry for Shahir Sheikh

Question #144316

sec(x)(sec(x)−cos(x))=

Expert's answer

"sec(x)(sec (x) -cos(x)) =1\/cos(x)(1\/cos(x) - cos(x)) ="

"= 1\/cos(x)((1-cos^2(x))\/cos(x)) = sin^2(x)\/cos^2(x) ="

"= tan^2(x)"

answer: "tan^2(x)"

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