Question

a bridge on a river make an angle of 45 degree with its edge if the length along the bridge from one edge to the other is 150 then find the width of river​

Answer 1

${\green{\underline {\underline{\huge\mathfrak \red{ Answer:-}}}}}$

$\mathtt{in \: right \: triangle \: </p><p>PQR \: we \: have} \\ \mathtt{\sin45( \frac{</p><p>QR}{ PR } ) } \\ \mathtt{ : \implies \frac{1}{\sqrt{2} } = \frac{ BC }{150} } \\ \mathtt{ : \implies \: BC \frac{150}{ \sqrt{2} } = 75 \times \sqrt{2} } \\ \mathtt \blue{thus \: the \: width \: of \: the \: river \: is \: 75 \sqrt{2} m}$

${\mathcal \pink{BE \: BRAINLY}}$