(tan35° tan45° tan55°) का मूल्यहै (tan35° tan45° tan55°) dk eku fdruk gS \

tan 35° . tan 45° . tan 55°

= tan 35° . 1 . tan (90° – 35°)

= tan 35° . 1 . cot 35° = 1.1 = 1

$\left[\tan \left(90^{\circ}-\theta\right)=\cot \theta ; \tan \theta \cdot \cot \theta=1\right]$