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QUESTION

9 c0s (pi.x/12) sin (cos -1 (x/2)) Sin alpha=-0.

Please help with these questions

  1. log5(5x-2)=1
  2. Cos (11pi/6)
  3. Sin (-5pi/6)
  4. Sec(-3pi/4)
  5. cot(-25pi/6)
  6. tan(pi/6)
  7. tan(pi/4)
  8. cosq(x)=3.9 c0s (pi.x/12)
  9. sin (cos-1 (x/2))
  10. Sin alpha=-0.2757 ,where -90 degrees i less or equal to alpha which is greater or equal to 90degreeed.
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