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Question

If ΔABC is right angled at B, what is the value of sin(A+C)


Solution

B=90        [Given]

We know that in ΔABC,

A+B+C=180 [Sum of angles in a triangle is 180 ]

    A+C+90=180

    A+C=18090

=90    sin(A+C)=sin 90=1


 

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