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Troyanec [42]
2 years ago
6

PLEASEEE HELP Questions 4 and 5

Mathematics
2 answers:
Ilya [14]2 years ago
4 0

Answer:

  • Given and explained below.

question 4

using sine rule:

\sf sinx = \frac{opp}{hyp}

\sf sinx = \frac{11}{13}

\sf x = sin^{-1}(\frac{11}{13} )

\sf x = 57.8

question 5

using cosine rule:

\sf cosx =\frac{adj}{hyp}

\sf cos(31) =\frac{x}{17}

\sf cos(31)*17 =x

\sf x = 14.6

stich3 [128]2 years ago
4 0

\\ \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

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