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प्रश्न
Evaluate the following :
`tan 10^@/cot 80^@`
उत्तर
We are given that `tan 10^@/cot 80^@`
Since `tan (9- theta) = cot theta`
`=> (tan 10)/(cot 80) = (tan(90 - 80))/(cot 80)`
`=> tan 10/cot 80 = cot 80/cot 80`
`=> tan 10/cot 80 = 1`
Therefore `tan 10/cot 80 = 1`
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