Mathematics
Grade9
Easy

Question

Find the measure of angle A.

  1. 24
  2. 90
  3. 66
  4. 42

hintHint:

sin space theta equals fraction numerator p e r p e n d i c u l a r over denominator h y p o t e n u s e end fraction
theta equals sin to the power of negative 1 end exponent left parenthesis fraction numerator p e r p e n d i c u l a r over denominator h y p o t e n u s e end fraction right parenthesis

The correct answer is: 24


    sin space A equals 11 over 27
A equals sin to the power of negative 1 end exponent left parenthesis 11 over 27 right parenthesis
A equals 24.042
A equals 24
    A=24 degrees

    Know what are inverse trigonometric functions.

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