Mathematics
Grade9
Easy

Question

Solve for x. Round to the nearest tenth.

  1. 19.0
  2. 20.0
  3. 21.0
  4. 20.5

hintHint:

cos space theta equals fraction numerator b a s e over denominator h y p o t e n u s e end fraction

The correct answer is: 21.0


    cos space 18 equals 20 over x
equals greater than x equals fraction numerator 20 over denominator cos space 18 end fraction
equals greater than x equals 21.0292
    =>x=21

    Learn all the trigonometric functions and know when to apply which one.

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