icedpeachytea
icedpeachytea icedpeachytea
  • 24-04-2017
  • Mathematics
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Does anyone know how to do this????

Does anyone know how to do this class=

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Sxerks Sxerks
  • 24-04-2017
If cosΘ = 0.3, it is implied that cosΘ = 0.3/1
Thus, using Pythagoras' Theorem, we know that the opposite side to the angle, Θ, is √(1 - (0.3)²) = √0.91 = 0.953939201....

Thus, sinΘ ≈ 0.954 (3 dp), which, I think, is approximated to 0.98 according to the solutions.
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