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प्रश्न
Find AD.
उत्तर
In ΔABC,
∠ACD = ∠ABC + ∠BAC
And ∠ABC = ∠BAC ...(∵ AC = BC)
∴ ∠ABC = ∠BAC
= `48^circ/2`
= 24°
Now,
`(AD)/(AB) = sin 24^circ`
`=>` AD = 30 × 0.4067
= 12.20 m
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