Question

7元
Which expression is equivalent to sin?
Sin 7 pi/6

Answer 1

Answer:

Step-by-step explanation:

$\sin \frac{7 \pi }{6} =\sin (\pi +\frac{\pi }{6} )\\=-\sin \frac{\pi }{6} \\=-\frac{1}{2}$

or

=-0.5