The expression can be written as : sin(π/3 - π/7)
what are trigonometric functions?
Trigonometric functions are functions that gives the relationship between the sides and angles of a triangle.
some of the trigonometric functions are sine, cosine, tangent.
Analysis:
Let A = π/3
B = π/7
If sin(A-B) = sinAcosB - cosAsinB
then sinπ/3cosπ/7 - sinπ/7cosπ/3 = sin(π/3 - π/7)
Learn more about Trigonometry : brainly.com/question/24349828
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