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प्रश्न
If \[\cos A = \frac{7}{25}\] find the value of tan A + cot A.
उत्तर
Given: `cos A=7/25`
We know that,
`sin^2 A+cos^2 A=1`
⇒` sin^2 A+(7/25)^2=1`
⇒` sin^2 A+49/625=1`
⇒` sin^2 A1-49/625`
⇒ `sin^2A=576/625`
⇒ `sin A=24/25`
Therefore,
`tan A+cot A= sin A/cos A+cos A/sin A`
=` (24/25)/(7/25)+1=(7/25)/(24/25)`
= `24/7+7/24`
=`((24)^2+(7)^2)/168`
=`(576+49)/168`
=`625/168`
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