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Nookie1986 [14]
2 years ago
10

A, B & C form a triangle where Z BAC = 90°.

Mathematics
2 answers:
Papessa [141]2 years ago
7 0

Answer:

Step-by-step explanation:

Nothing further can be done with this topic. Please check the expression entered or try another topic.

A, B, C, ZBAC=90°

AB=4.2mm

CA=1.5mm,

DP

mm

BC

hope this helps

Sedaia [141]2 years ago
3 0

Answer:

BC = 4.5 (1 dp)

Step-by-step explanation:

<u>Pythagoras’ Theorem</u>

a^2+b^2=c^2

(where a and b are the legs, and c is the hypotenuse, of a right triangle)

Given:

  • a = AC = 1.5
  • b = AB = 4.2
  • c = BC

Substituting these into the formula and solving for BC:

\implies 1.5^2+4.2^2=BC^2

\implies 2.25+17.64=BC^2

\implies BC^2=19.89

\implies BC=\pm\sqrt{19.89}

As distance is positive,

⇒ BC = 4.5 (1 dp)

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