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1. Use trigonometry to work out the value of x. Not drawn accurately. Help pls

1. Use trigonometry to work out the value of x. Not drawn accurately. Help pls
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13 votes
1.
Use trigonometry to work out the value of x.
Not drawn accurately.
Help pls

1. Use trigonometry to work out the value of x. Not drawn accurately. Help pls-example-1
User Mattias Holmqvist
by
8.9k points

1 Answer

3 votes

Answer:

20cos(39) or 15.543 (3 d.p.)

Explanation:

  • Use SOHCAHTOA
  • You want to find A and have an angle of 36° and H
  • So use CAH
  • cos(39) = x / 20
  • x = 20cos(39)
User Karzan Kamal
by
7.9k points
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