ericalexington ericalexington

25-07-2018
Mathematics

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Sines/ Cosines topic. In the triangle below round to the nearest tenth. Include explanation if possinle

Sines Cosines topic In the triangle below round to the nearest tenth Include explanation if possinle class=

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LammettHash LammettHash

25-07-2018

By the law of sines,

[tex]\dfrac{\sin90^\circ}{17}=\dfrac{\sin y^\circ}9[/tex]

[tex]\implies\sin y^\circ=\dfrac9{17}[/tex]

(since [tex]\sin90^\circ=1[/tex])

[tex]\implies y=\sin^{-1}\left(\dfrac9{17}\right)\approx32.0[/tex]

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