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puteri [66]
3 years ago
10

If sine theta equals one half and pi over two is less than theta is less than pi, what are the values of cos Θ and tan Θ?

Mathematics
1 answer:
iogann1982 [59]3 years ago
6 0

Answer:

  cosine theta equals negative square root of three over two; tangent theta equals negative square root of three over three

Step-by-step explanation:

If the angle were a 1st-quadrant angle, it would be ...

  arcsin(1/2) = π/6

and the other functions would be ...

  cos(π/6) = (√3)/2

  tan(π/6) = 1/√3 = (√3)/3

__

The angle of interest is in the second quadrant, where the signs of cosine and tangent are negative. Hence, ...

  • θ = 5π/6
  • cos(5π/6) = -(√3)/2
  • tan(5π/6) = -(√3)/3
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