Lei Jianing's answer to Ivey's Secondary 4 A Maths Singapore question.
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For the first quadrant, all functions will give a positive value. For the second quadrant, only the sine and cosec function give a positive value so on and so forth. So for this sine function to give a negative 1/2, it is in the third or fourth quadrant.
Date Posted:
2 years ago
Thanks for helping me! I got it ;)
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