-->

वृत्त

Question
CBSEHHIMAH10010468

एक बाह्म बिंदु P से Q केंद्र वाले वृत्त पर दो स्पर्श रेखाएँ PA तथा PB खींची गई हैं। यदि ∠PAB = 500 है, तो ∠AOB ज्ञात कीजिए।

Solution

PA = PB

angle PBA space equals space angle PAB space equals space 50 degree space
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space........... left square bracket space व ि पर ी त space क ो ण space क े space बर ा बर space क ो ण right square bracket
increment ABP space म ें comma space angle PBA space plus angle PAB plus angle APB space equals space 180 degree
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space........... left square bracket angle PBA comma space angle PAB space क ा space म ा न space रखन े space पर right square bracket
50 degree plus 50 degree plus angle APB space equals 180 degree
angle APB space equals space 180 degree minus 50 degree minus 50 degree space equals space 80 degree
चक ् र ी य space चत ु र ् भ ु ज space म ें space OAPB
space space space space space space space space space space space space space space space space space space angle AOB plus angle APB space equals space 180 degree
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space...... left square bracket space angle APB space क ा space म ा न space रखन े space पर space right square bracket
space space space angle AOB plus 80 degree space equals 180 degree
space space space angle AOB space equals space 180 degree minus 80 degree space equals space 100 degree