CAN SOMEONE PLEASE GIVE ME A FULL EXPLANATION ON HOW TO DO THESE TYPES OF PROBLEMS BECAUSE I HAVE ABSOLUTELY NO IDEA ON HOW TO DO THEM AND ALSO PLEASE GIVE THE ANSWER, THANK YOU!!!
Write an equation of the line passing through point P that is perpendicular to the given line.
P(4,−3), y=−x−5

keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the equation above

so it has a slope of -1, or we can say -1/1, thus

so, we're really looking for the equation of a line whose slope is 1 and runs through (4,-3)

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐