SSC CGL 2021 PYQ — Question 64

The correct answer is option 4 i.e. 1.

Tan$\theta$ × Cot$\theta$ = 1

⇒ tan35ºcot40ºtan45ºcot50ºtan55º = tan35°cot40° tan45°tan(90 - 50)cot(90 - 35)

⇒ tan35°cot40° tan45°tan(40)cot(35)

⇒ 1.