Question 7 (i)
In a right triangle ABC, B =90^o.

If AB= 6cm, BC= 8cm, find AC.

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Solution

Using Pythagoras theorem,

$A C^{2} = A B^{2} + B C^{2} \Rightarrow A C^{2} = (6)^{2} + (8)^{2} \Rightarrow A C^{2} = 36 + 64 = 100 \Rightarrow A C = 10 c m$

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∠ B = 90^{o}

Question 7 (i)
In a right triangle ABC, B =90^o.

If AB= 6cm, BC= 8cm, find AC.

Question 7 (ii)
In a right triangle ABC, B =90^o.
If AC= 13cm, BC = 5 cm, find AB.

∠

90^{\circ}

Question 2
ABC is a triangle, right angled at C. If AB = 25 cm and AC = 7 cm, find BC.

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