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madam [21]
3 years ago
12

I need explanation on sine rule for 3rd quadrant

Mathematics
1 answer:
nlexa [21]3 years ago
3 0

Consider the unit circle. The sine of an angle is the y-value of the location of the terminal ray where it intersects the unit circle. In the third and fourth quadrants, the sine is negative, because all y-values are negative there.

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