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KHothermansett
KHothermansett KHothermansett
  • 21-07-2016
  • Mathematics
Answered

Express as functions of positive acute angles:

  1. Sin 240 degree
  2. Tan 130 degree
  3. sec 305 degree
  4. cos 95 degree
  5. csc 185 degree

Verified Answer :

meerkat18
meerkat18 meerkat18
  • 21-07-2016
  1. Sin 240 degree = -sin ( 240 -180 degree) = -sin (60 degree)
    2. Tan 130 degree = -tan ( 180 - 130 degree) = -tan 50 degree
    3. sec 305 degree = sec ( 360 - 305 degree) = sec (55 degree)
    4. cos 95 degree = -cos (180 - 95 degree ) = -cos 85 degree
    5. csc 185 degree = -sin 5 degree
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