Question

Attachment 1st question.... 30pts

Answer 1

Answer:

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Answer 2

$\huge\rm\underline\blue{Solution:-}$

Given AD bisects ∠BAC

This mean , ∠BAD = ∠DAC

From interior angle bisect Theorem ,

$\large\rm{\frac{AB}{AC}\:=\:\frac{BD}{DC}}$

$\large\rm{\implies{\frac{AB}{5}\:=\:\frac{3}{4}}}$

$\large\rm{\implies{4AB\:=\:15}}$

$\large\rm{\implies{AB\:=\:\frac{15}{4}}}$

$\large\rm{\implies{AB\:=\:3.75cm}}$

∴ AB = 3.75 cm