c4 trig identies

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  • Created by: courteny
  • Created on: 08-03-17 13:52
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  • C4 TRIG
    • cosecA= 1/sinA
    • secA = 1/cosA
    • cotA=1/tanA
    • tan^2A+1= sec^2A
    • 1+cot^2A=cotsec^2A
    • compound angles
      • sin(a+b)= sinAcosB+cosAsinB
      • COS(A+B)=cosAcosB-sinAsinB
      • TAN(A+B)= tanA+tanB/ 1-tanAtanB
    • double angles
      • sin2A= 2sinAcosA
      • cos2A=
        • cos^2A-sin^2A
        • 1-2sin^2A
        • 2cos^2A-1
      • tan2A=2tanA/ 1-tan^2A

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