AR - Trigonometric ratio — task. Maths CBSE Live product, Class 10 (2025-26).

Assertion (A): \(sin \theta\) vanishes at \(\theta= \)\(0^{\circ}\)

Reason (R): On the unit circle, the sine of an angle is the \(y\)-coordinate of the corresponding point. At \(0^{\circ}\), the point is \((1, 0)\), so \(\sin(0^{\circ}) = 0\).

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
Assertion (A) is false but reason (R) is true.
Assertion (A) is true but reason (R) is false.
Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Previous task

Exit to the topic

Next task

Send feedback

Did you find an error?

Send it to us!

2. AR - Trigonometric ratio

Question: