Question

In ∆ ABC , m∠B=90°,BC=3 and AC=5 then tan A=………​

Answer 1

Step-by-step explanation:

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In ∆ ABC , m∠B=90°,BC=3 and AC=5 then tan A=………

TO FIND :-

tan A?

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In triangle in △ ABC, by Pythagoras theorem

AC^2 =AB^2 +AC^2

Given, AB=5 cm, BC=x

5^2 =x^2 +3^2

x = 5^2 −3^2 =25−9=16

$x = \sqrt{16} = 4$

Hence, AB=4 cm.

Or

Simply after constructing, we can measure AB side.

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Answer 2

Answer is above in the attachment hope you understand