Question 90

In  the given figure. PQRS is a square and SRT is an equilateral triangle. What is the value (in degrees) of $$\angle$$ $$SOR$$ ?


we have :

Now Angle SRT =60 
Angle TSR =60
since PQRS is a square 
so Triangle QRS will be a right isosceles triangle
So we get angle OSR =45
Now in triangle SOR
180=60+45+angle SOR
we get angle SOR =75

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