If angle B of isosceles triangle ABC is a right angle, what is the tangent of angle A?

B 1/2

C 1

D 1/√3

Solution

Correct Answer: Option C

যেহেতু ∠B=90⁰
এবং ∠A=∠C
সেহেতু ∠A=45⁰
∴ tan45⁰ =1