MCQ
જો $cos^{-1} \frac{4}{5}+cosec^{-1}\frac{5}{3}=cot^{-1}K$ હોયતો $K=...........$
- A$\frac{3}{4}$
- B$\frac{24}{7}$
- C$\frac{1}{25}$
- ✓$\frac{7}{24}$
$Cos^{-1} \frac{4}{5}+Cosec^{-1}\frac{5}{3}cot^{-1}K$

$tan^{-1}(\frac{3}{4})+tan^{-1}(\frac{3}{4})=Cot^{-1}K$ $\leftarrow$ સૂત્ર મુજબ
$Cot^{-1}K=tan^{-1}\frac{24}{7}$
$K=\frac{7}{24}$
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