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Math TN
9th Std
Ch-6: Trigonometry
1.
Trigonometric ratios
Exercise condition:
1
m.
In the given figure if \(u\) \(=\)
20
, \(v\) \(=\)
15
and \(w\) \(=\)
25
, then find the value of \(\cos \beta\).
1
\(\frac{15}{20}\)
\(\frac{15}{25}\)
\(\frac{25}{20}\)
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