Question

if in triangle ABC right angle c=90degree then sin(a+b)=​

Answer 1

Answer:

We know that the sum of all 3 angles in a triangle is 180° .

C=90°

But,

A+B+C=180°

⟹A+B=(180−90)°=90°

We also know that cos90°=0

Hence,

sin(A+B)=0

Answer 2

Answer:

90

Step-by-step explanation:

sum of measure of angles of a triangle is 180