Question

Express tanA in terms of cosA

Answer 1

TanA=sinA/cosA..........

Answer 2

Hey

here is your answer !!
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sin^2x + cos^2x = 1

divide each term by cos^2x

sin^2x / cos^2x + cos^2x/cos^2x = 1/cos^2x

tan^2x + 1 = 1 /cos^2x

tan^2x = 1/cos^2x - 1

tan^2x = 1 - cos^2x /cos^2x

tan x = √ 1 - cos^2x / cos^2x
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hope it helps