Question

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

Answer 1

Given: angle c =90degree

So, a+b+c = 180degree (Angle Sum Property)

a+b = 180-c

a+b=180-90

a+b = 90 -- (1)

From (1)

sin(a+b)

=sin 90

=1

Answer 2

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We have Given: angle c =90degree

So, a+b+c = 180degree (Angle Sum Property)

a+b = 180-c

a+b=180-90

a+b = 90 -- (1)

●From (1)

sin(a+b)

=>sin 90

=>1

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