Trigonometry · UPSC CDS/OTA · Question 11 of 30

Trigonometry – Question 11

Step-by-step solution. Trigonometry for UPSC CDS/OTA.

Topic
Trigonometry
Subject
Mathematics
Difficulty
Medium
Solve Time
45–60 sec

Solved UPSC CDS/OTA Question

A solved UPSC CDS/OTA PYQ — decoded step-by-step.

Solve it the standard way once — then learn the shortcut.

Q · TrigonometryMedium · 45s

If Cot θ = 21/20, then what is the value of Cosec θ?

TopicTrigonometry
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min

Step-by-Step Solution

The complete worked solution.

Every step explained — no skipped algebra.

Solution illustration 1
Final Answer: Option B — 29/21
Solve Question✦ Build Plan
Trigonometry Question 11 – UPSC CDS/OTA