In ∆ABC, ∠C = ∠A, BC = 4 cm and AC = 5 cm. Then, AB = ?
(a) 4 cm
(b) 5 cm
(c) 8 cm
(d) 2.5 cm

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Solution

Given: In ∆ABC, ∠C = ∠A, BC = 4 cm and AC = 5 cm.

In ∆ABC,

As, ∠C = ∠A (Given)

Therefore, $B C = A B$ (Sides opposite to equal angles.)

$\Rightarrow B C = A B = 4 cm$

Hence, the correct option is (a).

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In ∆ABC, ∠C = ∠A, BC = 4 cm and AC = 5 cm. Then, AB = ? (a) 4 cm (b) 5 cm (c) 8 cm (d) 2.5 cm

Given: In ∆ABC, ∠C = ∠A, BC = 4 cm and AC = 5 cm. In ∆ABC, As, ∠C = ∠A (Given) Therefore, BC=AB (Sides opposite to equal angles.) ⇒BC=AB=4 cm Hence, the correct option is (a).

In ∆ABC, ∠C = ∠A, BC = 4 cm and AC = 5 cm. Then, AB = ?
(a) 4 cm
(b) 5 cm
(c) 8 cm
(d) 2.5 cm

Given: In ∆ABC, ∠C = ∠A, BC = 4 cm and AC = 5 cm.

In ∆ABC,

As, ∠C = ∠A (Given)

Therefore, $B C = A B$ (Sides opposite to equal angles.)

$\Rightarrow B C = A B = 4 cm$

Hence, the correct option is (a).