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प्रश्न
Without using trigonometric tables, evaluate :
`cot 38^circ/tan 52^circ`
उत्तर
`cot 38^circ/tan 52^circ`
= `cot (90^circ - 52^circ)/tan 52^circ`
= `tan 52^circ/tan 52^circ` [`because` tan (90-θ) = cot θ]
= 1
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