Why Sin has negative value?

Lawrence

2007-06-25 10:46 pm

What is the of tan A if sin A = -0.6 and cos A > 0?

回答 (1)

tyw

2007-06-25 10:58 pm

✔ 最佳答案

tanA= -0.75

因為有4個quadrant
quadrant 3&4...sin係negative

參考: ME

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