If sin θ = 3/5, find cos θ.
JEE Trigonometry Basic Question
Mathematics
Trigonometry
JEE Main
Easy
2025
Question
Options
A) 4/5
B) 3/5
C) 5/4
D) 2/5
Show Correct Answer
A
View Detailed Solution
Using sin²θ + cos²θ = 1
cos²θ = 1 − (3/5)²
cos²θ = 1 − 9/25
cos²θ = 16/25
cos θ = 4/5