meekreed25 meekreed25
  • 10-06-2021
  • Mathematics
contestada

Use law of sines or law of cosines to find the length of side AB Please show work !!

Use law of sines or law of cosines to find the length of side AB Please show work class=

Respuesta :

MrRoyal
MrRoyal MrRoyal
  • 15-06-2021

Answer:

[tex]AB = 11.3[/tex]

Step-by-step explanation:

Given

The attached triangle

Required

Length AB

To do this, we make use of sine law which is represented as:

[tex]\frac{a}{\sin(a)} = \frac{b}{\sin(b)} = \frac{c}{\sin(c)}[/tex]

So, we have:

[tex]\frac{15}{\sin(70)} = \frac{AB}{\sin(45)}[/tex]

Make AB the subject

[tex]AB = \frac{15}{\sin(70)} * \sin(45)[/tex]

[tex]AB = \frac{15}{0.9397} *0.7071[/tex]

[tex]AB = 11.3[/tex]

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