$\frac{1-tan^260^{\circ}}{1+tan^260^{\circ}}+sin^260^{\circ}$ এর মান নির্ণয় কর।

Question

$\frac{1-tan^260^{\circ}}{1+tan^260^{\circ}}+sin^260^{\circ}$

Answer 1

প্রদত্ত রাশি,
$\frac{1-tan^260^{\circ}}{1+tan^260^{\circ}}+sin^260^{\circ}$

$=\frac{1-\left(\sqrt3\right)^2}{1+\left(\sqrt3\right)^2}+\left(\frac{\sqrt3}{2}\right)^2$

$=\frac{1-3}{1+3}+\frac34$

$=\frac{2}{4}+\frac34$

$=\frac{2+3}{4}$

$=\frac54$ [Answer]