Question

ln an triangle ABC r3=r1+r2+r then angleA+angle B=​

Answer 1

Answer:

∠A+∠B+90°=180°

∠A+∠B=180°-90°

∠A+∠B = 90°

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Answer 2

Step-by-step explanation:

sum of all angles in a triangle =180 degrees

So,

angle A+angle B +Angle C=180

c=90 so,

angle A+angleB= 180-90= 90 degrees

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