Question

in figure 8,OD perpendicular find angle AOD+COB​

Answer 1

Answer:

angle AOB=180°(angle of straight line)

Angle AOB=angle AOD + angle DOC + angle COB

angle DOC =90°(given)

therefore, <AOD +90° + < COB = 180°

<AOD + <COB = 180°-90°

<AOD+<COB=90°

Answer 2

Answer=90⁰

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