bm42400 bm42400

05-03-2019
Mathematics

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What basic trigonometric identity would you use to verify that sin x con x tan x= 1-cos^2x?

What basic trigonometric identity would you use to verify that sin x con x tan x 1cos2x class=

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Ashraf82 Ashraf82

05-03-2019

Answer:

The answer is (a) ⇒ tanx = sinx/cosx

Step-by-step explanation:

∵ (sinx)(cosx)(tanx) = (sinx)(cosx)(sinx/cosx) = sin²x

∵ sin²x = 1-cos²x

∴ L.H.S = R.H.S

∴ (sinx)(cosx)(tanx) = 1 - cos²x

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