Answer to Question #199153 in Trigonometry for Hetain

Question #199153

5. Determine the length of XY to the nearest tenth of a centimetre.


61°

17.4 cm

Y X


Z

a. 8.4 cm b. 15.2 cm c. 31.4 cm d. 19.9 cm


1
Expert's answer
2021-05-30T23:16:17-0400

To get angle XZY=9061=29°90-61=29°


Using the sine rule ;

17.4Sin90=xSin29\frac {17.4} {Sin 90}=\frac {x} {Sin 29}


17.41=x0.4848\frac {17.4} {1}=\frac {x} {0.4848}


x=(17.4×0.4848)=8.4cmx=(17.4×0.4848)=8.4cm


XY=8.4cm


a) 8.4 cm Correct

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