Basic Trigonometry Identities

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14 Terms

1
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cot² θ + 1

cos² θ /sin² θ

<p>cos² θ /sin² θ</p>
2
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tan θ

sin² θ /cos² θ

<p><span>sin² θ /cos² θ</span></p>
3
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csc² θ

1+ cot² θ

4
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1

sin²θ+cos²θ=?

5
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sec²

tan²x +1

6
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sin(u+v)

sin(u)cos(v)+cos(u)sin(v)

7
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sin²x

1-cos²x

8
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cos²x

1-sin²x

9
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csc²x

cot²x+1

10
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cos(u-v)

cos(u)cos(v)+sin(u)sin(v)

11
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tan(x-y)

(tanx-tany)/(1+tanxtany)

12
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cos(θ)

sin(π/2-θ)

13
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law of sines

sin(A)/a=sin(B)/b=sin(C)/c

14
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law of cosines

a²=b²+c²-2(b)(c)cos(A)