A(10) = <span>9(10) + 9= 90+9 =99
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I don’t know sorry I just need the points
I hope this helps you
let's find AB
AB=square root of 2^2+3^2
AB=square root of 13
cosO=2/sqrt13
sinO=3/sqrt13
tgO=3/2
ctgO=2/3