Question

Which of the following is $sin\theta$ from the unit circle?

• A. PQ
• B. OQ
• C. PO
• D. None of the above

Answer 1

The correct option is A

PQ

From the unit circle:
$sin\theta$ = $\frac{PQ}{OP}$ = $\frac{PQ}{1}$ (Since OP = 1)
$\therefore sin\theta$ = PQ