Question

In ∆ABC,angle A=90° If AB=7 and BC-AC=1cm, find sin c and tan b.

Answer 1

let AC=x then BC=1+x
BC^2=AB^2+AC^2
(1+x)^2=7^2+x^2
1+2x+x^2=49+x^2
             2x=48
              x=24
 AC=24,BC=25
sin C=7/25
tan B=24/7
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