Set: Trig Idenities

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All 25 terms

TermDefinition
Sin(A+B)sinAcosB + cosAsinB
Sin(A-B)sinAcosB - cosAsinB
Cos(A+B)cosAcosB - sinAsinB
Cos(A-B)cosAcosB + sinAsinB
2sinAcosBsin(A+B) + sin(A-B)
2cosAsinBsin(A+B) - sin(A-B)
2cosAcosBcos(A-B) - cos(A+B)
sin(2A)2sinAcosA
cos(2A)cos^2A - sin^2A
cos(2A)2cos^2A -1
cos(2A)1 - 2sin^2A
cos^2A(1+cos2A)/2
sin^2A(1-cos2A)/2
sinAcosB1/2[sin(A+B)+sin(A-B)]
cosAcosB1/2[cos(A+B)+cos(A-B)]
sinAsinB1/2[cos(A-B)+cos(A+B)]
cosAsinB1/2[sin(A+B)+sin(A-B)]
tan(2A)(2tanA)/(1-tan^2A)
Tan(A+B)(tanA+tanB)/(1-tanAtanB)
Tan(A-B)(tanA-tanB)/(1+tanAtanB)
sin A + sin B2sin(A+B/2)cos(A-B/2)
sin A - sin Bsin(A+B/2)cos(A+B/2)
cos A + cos B2cos(A+B/2)cos(A-B/2)
cosA - cosB-2sin(A+B/2)sin(A-B/2)
cosA- cosB2sin(A+B/2)sin(A-B/2)

Set Information

Terms 25
Creator lyfeof2009
Created July 31, 2008
Groups None
Subject trig
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Most Missed Words

  1. cos(2A) cos^2A - sin^2A - 2 misses
  2. sin(2A) 2sinAcosA - 2 misses
  3. sin A + sin B 2sin(A+B/2)cos(A-B/2) - 2 misses
  4. cosAsinB 1/2[sin(A+B)+sin(A-B)] - 2 misses
  5. 2sinAcosB sin(A+B) + sin(A-B) - 2 misses
  6. cos(2A) 2cos^2A -1 - 2 misses
  7. sin^2A (1-cos2A)/2 - 2 misses