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प्रश्न
Find x and y in the given figure.
बेरीज
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उत्तर
x and y from the figure:
Left triangle ABC (right at B), with ∠C = 30° and hypotenuse AC = 12.
sin 30° = `(AB)/(AC) = AB`
= `12 ⋅ 1/2`
= 6
x = 6 cm
Right triangle CDE (right at D), with ∠C = 60° and ED = 9
tan 60° = `(ED)/(CD) = 9/y`
y = `9/sqrt3`
y = `(9sqrt3)/3`
y = `3sqrt3` cm
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