Question

In right triangle ABC,

angleC is a right angle and sin A = sin B. What is m angle A?

A. 30
B. 45°
C. 60°
D. 75°

Answer 1

A=45°

Explanation:

soln:

given,

ABC is a right angled triangle where C is right angle

i.e. C=90°

sin A= sin B=x(let)

A=?

we know,

A+B+C=180°[°•°sum of angles of a triangle]

or, x+x+90°=180°

or,2x=90°

•°•x=45°

hence,A=45°