127k views
5 votes
I Honestly dont understand all of these that have to do with right angles, tangent lines, and secant lines. can i please get some help.

I Honestly dont understand all of these that have to do with right angles, tangent-example-1
User Wolfish
by
8.2k points

1 Answer

1 vote

Answer:

110°

Explanation:

m arc DB=140°

m arc BCD=360-140=220°

∠ A=1/2×220=110° (∵angle at the circumference=1/2 angle at the center.)

User Astrofrog
by
7.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories