Assuming that a traingle is meant to be a triangle, then the answer is none.
If by "then" you meant "than", then the answer could be a straight angle.
obtuse
its a right angle
no, it only has 1 obtuse angle.
Reflection is the return of sound waves from surfaces on which they are incident.
A mirror reflects light. "Reflection" also means thinking about something. Thus if you were thinking about how you face looked in the mirror this morning you would be having a reflection on reflection.
An obtuse angle is only one angle, however if you meant 'how many degrees?' then an obtuse angle contains more than 90 and less than 180 degrees..
Greater than 90, less than 180.
Assuming that a traingle is meant to be a triangle, then the answer is none.
reflected impedence is a tool to analyse resonant coupling..
what is the meant by total internal reflection
Check spelling and ask again-do you need reflection or refraction
If by "then" you meant "than", then the answer could be a straight angle.
No - simply because a 'reflex' angle (I think that's what you meant) is more than 180 degrees, and an obtuse angle is between 90 and 180 degrees.
a normal is the middle line from where angle of incidence and angle of reflection are same
obtuse