Trig Modelling

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Last updated 7:58 AM on 10/13/26
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9 Terms

1
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Sin (A+B)

= sinA cosB + sinB cosA

2
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sin(A-B)

=sinA cosB - cosA sinB


3
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Cos(A+B)

= cosA cosB - sinA sinB

4
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Cos(A-B)

= cosA cosB + sinA sinB

5
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tan(A+B)

= tanA + tanB / 1- tanA tanB

6
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Tan(A-B)

= tanA - tanB / 1+ tanA tanB

7
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Sin 2A

= 2 sinA cosA

8
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Cos 2A

= cos² A - sin² A

9
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Tan 2A

= 2 tanA/ 1- tan² A