Trigonometric ratios — task. Assessments, Math TN.

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from the figure.png

In the given figure if

$u$

$=$ 20,

$v$

$=$ 15 and

$w$

$=$ 25, then find the value of

$\cos \beta$ .

1
$\frac{15}{20}$
$\frac{15}{25}$
$\frac{25}{20}$

$1$

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