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Rzqust [24]
3 years ago
14

Find the area of triangle ABC. Give your answer to 1 decimal place. Sine rule.

Mathematics
1 answer:
laiz [17]3 years ago
4 0

Answer:

<h2> 31.7 cm^2</h2>

Solution,

In ∆ ABC

< A + <B + < C = 180°

or, 72 + 59 + <C = 180°

or, 131 + <C = 180°

or, <C = 180 - 131

< C = 49

Area of ∆ABC = 1/2 ab sin C

= 1/2 * 12 * 7 * sin 49

= 42 * sin 49

= 31.7 ( approximately)

Hope this helps...

Good luck on your assignment...

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