evanhafle evanhafle
  • 10-07-2022
  • Mathematics
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4. In the triangle ABC, angle A = 90° and
sec B = 2
a.Work out the size of angles B and C.
b.Find tan B.
c. Show that 1 + tan² B = sec² B.​

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swangmo722
swangmo722 swangmo722
  • 10-07-2022

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