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Prove that x=40

Mathematics
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Any question ??
x=40, done
drawing my diagram~ wait~ sorry~

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Other answers:

:)
XD don't worry
good drawing xD
1 Attachment
you drew that?
yeap ~
|dw:1346932456806:dw|
Now, use Sum of all angles of a triangle = 180
The two adjacent line are a tangent tot eh circle and also thery along with the lines forming the 70 angle form a quadrilateral. The sum of angles in a quadrilateral is 360 and angle formed by tangent is 90. Now I guess you can solve
@sauravshakya thanks :))
Welcomx
@punnus the angle u are saying is not 90 because the lines are not radius or diameter
I know that. I wants trying to give hints to solve the question and not the solution.
Were @sauravshakya were you able to tell her why the rest of the angles of the triangle are 70.
Angle between a tangent and a chord at the point of contact is equal to the opposite angle formed by the chord at the circumference
@punnus it's one of the rules in a circle i know~but thanks anyway~ :)
Ya.. its a theorem
@sauravshakya Do you know how that your theorem has come about...
It is a derived theorem...
derived using other theorems.
Actually its not my theorem.. BUT IF u are asking for a proof then U can search it on google
I know the proof of this so called theorem...
My point is that when ever you solve a question solve it frm the basic theorems that are present and not the derived ones
@sauravshakya If you want i can prove it for you right now...
I also know the proof..... But if u r willing to prove it then OK PLZ TAKE YOUR PRECIOUS TIME AND PROVE IT
To know how to use the theorem is better then to know the proof of it

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