Question

ABC is a right triangle angled at C. If AB = 15cm and AC = 7cm, find BC.

Answer 1

Answer:

Step-by-step explanation:

ABC is the right angled triangle where the reference angle is at C=θ

Perpendicular (p)= AB= 15cm

Hypotenuse(h)= AC= 7cm

base(b)=BC=?

now,

Using pythagoras theorem,

h^2 = p^2 + b^2

or, 7^2 = 15^2 + BC^2

or, 49 = 225 + BC^2

or, 49-225= BC^2

or, √176= BC

BC= 4√11 cm.

Answer 2

Answer:

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