To solve the problem we must know about the Sine function of trigonometry.
The Sine or Sinθ in a right angle triangle is the ratio of its perpendicular to its Hypotenuse. it is given as,
[tex]\rm{Sine(\theta) = \dfrac{Perpendicular}{Hypotenuse}[/tex]
where,
θ is the angle,
Perpendicular is the side of the triangle opposite to the angle θ,
The hypotenuse is the longest side of the triangle.
The height of the painting is 30 inches.
Given to us
[tex]\rm{Sine(\theta) = \dfrac{Perpendicular}{Hypotenuse}[/tex]
Substitute the value,
[tex]\rm{Sin(\angle DBC) = \dfrac{DC}{BD}[/tex]
[tex]Sin(36.87^o) = \dfrac{height}{50}\\\\BD = Sin(36.87^o)\times {50}\\\\BD = 30\ inches[/tex]
Hence, the height of the painting is 30 inches.
Learn more about Sine:
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