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प्रश्न
In right-angled triangle ABC; ∠ B = 90°. Find the magnitude of angle A, if: AB is √3 times of BC.
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उत्तर
Consider the figure
Here AB is `sqrt(3)` times of BC means
`"AB"/"BC" = sqrt(3)`
cot θ = cot 30°
θ = 30°
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