Question

ABC is a triangle, right-angled at C. If AB = 25
cm and AC=7cm, find BC.​

Answer 1

Answer:

in triangle ABC, right angle at c.

AB=25 AC= 7 and BC=?

(by Pythagoras theorem)

AB^2=AC^2+BC^2

25^2=7^2+BC^2

625=49+BC^2

BC^2=576

BC^2=24^2

BC=24( cencelling squares)

therefore, BC is 24Cm

Answer 2

Answer:

in right angle triangle

bc2= √ab2-ac2

=√25^2-7^2

=√625-49

=√576

=24

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