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PLEASEEE HELP
Questions 4 and 5

PLEASEEE HELP Questions 4 and 5-example-1

2 Answers

9 votes


\\ \rm\hookrightarrow sinx=11/13


\\ \rm\hookrightarrow sinx=0.8


\\ \rm\hookrightarrow x=sin^(-1)(0.8)


\\ \rm\hookrightarrow x=53°

#5


\\ \rm\hookrightarrow sin31=x/17


\\ \rm\hookrightarrow x=sin31(17)


\\ \rm\hookrightarrow x=0.5(17)


\\ \rm\hookrightarrow x=8.5

User Steve Owens
by
6.7k points
12 votes

Answer:

  • Given and explained below.

question 4

using sine rule:


\sf sinx = (opp)/(hyp)


\sf sinx = (11)/(13)


\sf x = sin^(-1)((11)/(13) )


\sf x = 57.8

question 5

using cosine rule:


\sf cosx =(adj)/(hyp)


\sf cos(31) =(x)/(17)


\sf cos(31)*17 =x


\sf x = 14.6

User Cremno
by
7.6k points