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10 questions
sinθ=\sin\theta=sinθ=
x/y
y/x
x/r
y/r
1−3\frac{1}{-\sqrt{3}}−31
3\sqrt{3}3
12\frac{1}{2}21
−32\frac{-\sqrt{3}}{2}2−3
tanθ=\tan\theta=tanθ=
7/24
-7/24
24/7
-24/7
cosθ=\cos\theta=cosθ=
-3/4
-3/5
4/5
-4/5
5/3
-5/3
3/5
y/1
3/4
5/4
-1
22\frac{\sqrt{2}}{2}22
−22-\frac{\sqrt{2}}{2}−22
2\sqrt{2}2
cosθ是否正數??\cos\theta是否正數??cosθ是否正數??
是
否
-5/12
5/12
-5/13
5/13
2.4/2.5
0.7/2.5
0.7/2.4
1
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