Kai Chew's answer to Nur Athilah Binte Heri Purnomo's Secondary 3 A Maths Singapore question.
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Explanation incase you still need clarification:
Angles A and B are in the same quadrant.
Which quadrant they are in?
They are in the second quadrant.
The reason why both angles A and B are in the second quadrant is because tanB is negative while sinA is positive. By using the ASTC rule, 2nd quadrant is the only quadrant where sin is positive and tan is negative.
Angles A and B are in the same quadrant.
Which quadrant they are in?
They are in the second quadrant.
The reason why both angles A and B are in the second quadrant is because tanB is negative while sinA is positive. By using the ASTC rule, 2nd quadrant is the only quadrant where sin is positive and tan is negative.
Date Posted:
1 year ago
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