Need help with trigonometry equations

• sexy girls

  24 Apr 09, 22:45

  P cos 30 + Q cos 45 = 100

  P sin 30 = Q sin 45

  Find the values of P and Q

  Does anyone know how to solve this? I am stuck with this question. Thanks in advance

• eagle

  24 Apr 09, 22:51

  because sin 45 = cos 45,

  P sin 30 = Q cos 45

  Sub into first equation

  P cos 30 + P sin 30 = 100

  P (cos 30 + sin 30) = 100

  Solve for P

  then solve for Q

• sexy girls

  24 Apr 09, 23:30

  i have get the answer. thanks for your help
• HiAy3Captain

  24 Apr 09, 23:32

   cool