The expression which gives the area of triangle QRS is .
We need to find the area of triangle QRS.
<h3>How do I find the area of a triangle using trigonometry?</h3>The area of a triangle can be expressed using the lengths of two sides and the sine of the included angle. Area of Δ = ½ ab sin C.
Now, the area of the triangle QRS
Therefore, the expression which gives the area of triangle QRS is .
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