IUU .
(a)
The perimeter of a triangle is 84 cm and its area is 336 cm2. If one of its side is 30 cm, find the
lengths of remaining two sides.

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

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1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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