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OpenStudy (song_of_the_sole):
|dw:1464303281819:dw|
OpenStudy (song_of_the_sole):
@mathstudent55
OpenStudy (emyoung0):
What are we trying to figure out ?
OpenStudy (song_of_the_sole):
it says in the figure below lines that appear to be tangent are tangent. Point O is the center of the circle. Which is the value of x?
OpenStudy (song_of_the_sole):
@emyoung0
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OpenStudy (emyoung0):
Does it give you any options to choice from?
OpenStudy (song_of_the_sole):
yah A=43
B=47
C=90
D=137
OpenStudy (song_of_the_sole):
@rebeccaxhawaii
OpenStudy (sshayer):
|dw:1464309492770:dw|
OpenStudy (sshayer):
sum of angles=?
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OpenStudy (song_of_the_sole):
how do i find that
OpenStudy (sshayer):
sum of angles of triangle=?
OpenStudy (sshayer):
do you know?
OpenStudy (song_of_the_sole):
no
OpenStudy (sshayer):
sum of angles of a triangle=180 degree
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OpenStudy (sshayer):
can you find x?
OpenStudy (song_of_the_sole):
?
OpenStudy (sshayer):
90+43+x=180
x=?
OpenStudy (song_of_the_sole):
47
OpenStudy (sshayer):
it is simple algebra.
correct
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OpenStudy (song_of_the_sole):
so the answer is 47
OpenStudy (sshayer):
133+x=180
x=180-133=?
OpenStudy (song_of_the_sole):
180-133=47
OpenStudy (sshayer):
you are correct.
you have to remember two things
1.sum of angles of a triangle=180 degree
2.tangent makes 90 degree with radius or diameter at its ends.
OpenStudy (song_of_the_sole):
okay thanks do u mind helping with a few more
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OpenStudy (sshayer):
no
OpenStudy (sshayer):
you can post your question.
OpenStudy (song_of_the_sole):
which of the following is the value of x to the nearest tenth?