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ABC is a right angled triangle at C ,then sin(A+B) |
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Answer» Answer: a+b = 90 Step-by-step EXPLANATION: by angle sum property of triangle a+b+c = 180 therefore 90 + X + x = 180 = 90 + 2x = 180. therefore 2x = 180 - 90 = 2x = 90 = x 90/2 = 45 therefore 45 + 45 = 90 = A + B = 90
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