Practice free →
HomeUP Board Class 10mathematicsIntroduction to Trigonometry › The fundamental trigonometric identity is:

The fundamental trigonometric identity is:

A$\sin\theta + \cos\theta = 1$
B$\sin^2\theta + \cos^2\theta = 1$
C$\sin^2\theta - \cos^2\theta = 1$
D$\sin^2\theta + \cos^2\theta = 0$
Answer & Solution
Correct answer: B. $\sin^2\theta + \cos^2\theta = 1$
sin²θ + cos²θ = 1 for all θ.
Solve this in the app — UP Board Class 10 practice & 24k+ MCQs →
Related questions