Hello Ganga: Want to clarify that the angle AOB is 50 deg, and not ADB. How did I get it? Answer is elementary geometry... extend the line OA so that it meets the horizontal line through E at say point Q and you get a right angle triangle AQE. Since angle AEQ is 50 deg., angle AQE would be 40 deg. Now consider the right angle triangle OBQ. Angle OQB is 40 deg., so angle AOB is 50 deg. So you make a general rule... if a line makes an angle Alpha with the horizontal, the normal to that line would make the same angle Alpha with the vertical. Hope that helps!
I think you want to know how the reaction Ra makes an angle of 40 deg with the horizontal. Extend the line of Ra backwards so that it meets a horizontal line ( as shown thru' dotted lines in the video) and you get a right angle triangle - one angle is 50 deg so the other would be 40 deg.I hope this helps in clearing your doubt.
Sir u have clear all problems about this sums.......very big thnx sir
You are welcome Altaf!
How did you get the angle ADB as 50°?
You didn't mention any rule or law for that
Hello Ganga: Want to clarify that the angle AOB is 50 deg, and not ADB. How did I get it? Answer is elementary geometry... extend the line OA so that it meets the horizontal line through E at say point Q and you get a right angle triangle AQE. Since angle AEQ is 50 deg., angle AQE would be 40 deg. Now consider the right angle triangle OBQ. Angle OQB is 40 deg., so angle AOB is 50 deg.
So you make a general rule... if a line makes an angle Alpha with the horizontal, the normal to that line would make the same angle Alpha with the vertical.
Hope that helps!
Very nice explainantion, cleared all the concepts
Thanks Tanvi for your comments and I'm glad to hear that the video helped in clearing your concepts. Keep watching my other videos too!
Can you please elaborate how could line PE bisect angle AOB
This is elementary geometry - hint: the triangles AOE and BOE are congruent triangles
Wonderful explanation i have ever heard about this sum
Well explained thanks alot
Thank you so much sir🥺🥺
Amit, you're welcome.
excellent
very well explained Dear😃
thank u sir❤
sir how was the angle 40 degree? please comment
I think you want to know how the reaction Ra makes an angle of 40 deg with the horizontal. Extend the line of Ra backwards so that it meets a horizontal line ( as shown thru' dotted lines in the video) and you get a right angle triangle - one angle is 50 deg so the other would be 40 deg.I hope this helps in clearing your doubt.
Vector In Motion thank you it helped me a lot
well explained
Thank you Baraka for your comments.
The same question ans i looking for
Thanks
what is dia ? radius ?
Abbreviation for diameter i.e. twice the radius!
thanku sir
Who is here from Acme ?
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