sin theta= 2/3 tan theta 0?

2016-12-04 10:38 am

更新1:

Could you tell how to find cos, tan

回答 (3)

2016-12-04 10:59 am

✔ 最佳答案

Your inequality sign is missing.

Assuming tan(t) > 0

adjacent side = sqrt(3² - 2²) = sqrt(5)

cos(t) = sqrt(5)/3

tan(t) = 2/sqrt(5)

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2016-12-04 12:14 pm

x² = 3² - 2² = 5
x = √5
tan Ө = 2 / √5______for quadrant 1

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2016-12-04 10:46 am

Get your calculator, there should be a sin-1 somewhere near your sin button. Sin-1(2/3) = theta

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