anonymous
  • anonymous
If cosx=3/5 and 0
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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zzr0ck3r
  • zzr0ck3r
Do you know soh cah toa?
arindameducationusc
  • arindameducationusc
tan 2x= 2tanx/1-tan(^2)a
arindameducationusc
  • arindameducationusc
tan3x=3tanx=tan^3x/1-3tan^x

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arindameducationusc
  • arindameducationusc
The above was for Question 2
arindameducationusc
  • arindameducationusc
For Question 1, sinx=1-cos(^2)x and Sin(A-B)=sinAcosB-cosAsinB
arindameducationusc
  • arindameducationusc
This was for question1
anonymous
  • anonymous
It says without using a calculator I know these formulae but I don't think they will be used here Can please solve it detailed Thanks

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