gd mrng sir /mam.
in a right angle ABC,right anglenis at B,ifbtan A=√3 then find the value of
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tan A= √3 = tan 60° so ∠A=60°, Hence ∠C = 30°.
So cos A cos C- sin A sin C = (1/2)x (√3/2) - (√3/2)x (1/2) =0
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