if r+r1+r2=r3 then show that c=90
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Step-by-step explanation:
r + r1 + r2 = r3, r = 90
90 + 90 (1) + 90 (2) = 90 (3)
90 + 90 + 180 = 270
180 + 180 = 270
360 = 270 is incorrect
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