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Phantasy [73]
4 years ago
13

Help me please, thank u

Mathematics
2 answers:
IrinaVladis [17]4 years ago
4 0

Answer:

B. 76 square centimeters

ella [17]4 years ago
3 0

Answer: 76 square cm

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What is the length of the missing leg
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Answer:

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Step-by-step explanation:

1. Pythagoras Theorem

25 = \sqrt{3^{2}+b^{2}}

2. Find b

5 = 3^{2}+b^{2}

b^{2} = 5-3^{2} = 5-9 = -4

but sqrt(-4) is not possible

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OR (Require trig knowledge)

1. Sine Rule

\frac{a}{sin\alpha}=\frac{b}{sin\beta}=\frac{c}{sin\pi }

2. Plug in numbers

\frac{5}{sin90}=\frac{b}{sin60}=\frac{3}{sin30}

b ≅ 4.33

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