For , which inequality is…

MATHEMATICS · Single correct · A Level · Mathematics · Trigonometry · Trigonometry

Problem

For 0<x<π20< x<\dfrac{\pi}{2}, which inequality is valid? (a) x<sin⁡x<tan⁡xx< \sin x< \tan x (b) sin⁡x<tan⁡x<x\sin x< \tan x< x (c) sin⁡x<x<tan⁡x\sin x< x< \tan x (d) sin⁡x<x<cos⁡x\sin x< x< \cos x

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