Question

If the triangle ABC is right angled at C ,then the value of Sin(A+B)

Answer 1

A+B =90

sin 90=1

answer is 1

Answer 2

Answer:

A+B+C=180. (ASP)

A+ B =180-C

A+B=90. (C=90)given. ...1

ATQ: sin(A+B)

sin90. (from 1)

1

Therefore SIN(A+B)=1