suppose
the sum of 2 angles A and B =C
where C is between -90 to 90
so
A + B = C
plz tell me my mistake as we all know that this thing is not at all true
Ankit Jaiswal , 9 Years ago
Grade 11
Trigonometry> suppose the sum of 2 angles A and B =C wh...
1 AnswersAjay
Posting again as some errors in previois answer
sin x = sin y implies x = nπ + (– 1)n y, where n ∈ Z.
in Your case Sin (A+B) = Sin(180-C) implies
A+B = 180-C for n = 0
This solution is not correct as explained
Since C -90 implies 180-C > 90.
But A+B = C is less than 90 hence this solution is discarded
The correct solution to this equation is
A+B = 180 – (180-C) = C for n =1
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