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Pls answerAB is tangent to both circlesfind angle ACB + angle ADB |
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Answer» Step-by-step explanation: WE are GIVEN that the two circles intersect each other at C and D and the line ab is the common tangent, then ANGLE made by the chord and tangent= angle in alternate SEGMENT, therefore ∠CBA=∠CDB and ∠CAB=∠CDA. Now, as ∠CDB+∠CDA=∠CBA+∠CAB ⇒∠ADB=180°-∠ACB ( because from the FIGURE it is given that ∠CDB+∠CDA=∠ADB) ⇒∠ADB+∠ACB=180° Hence proved. |
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