Angle ABC is right angles at B,BC=7cm and AC-AB= 1cm. Find the value o

1.	Angle ABC is right angles at B,BC=7cm and AC-AB= 1cm. Find the value of cosA+sinA
Answer» If ac-ab=1 then,AC=1+AB-----(1)IN TRI ABC BY PYTHAGORAS TH.(1+AB)^2=(7)^2+(AB)^2OPENING IDENTITY....1+(AB)^2+2AB=49+AB^22AB=48AB=24HENCE, AC=24+1=25cmcosA+sinA=24/25+7/25=31/25

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