Triangles ABC and DEF are shown above. Write ratio equal to BC/AB. Which trigonometric ratio does this represent?

Step-by-step explanation:

From the picture attached,

From ΔABC,

m∠B = 180° - (m∠C + m∠A)

        = 180° - (90° + 32°)

        = 180° - 122°

        = 38°

Now we have to find the trigonometric ratio of BC and AB from ΔABC,

Since, sinθ =

sin(32°) =

Therefore, ratio of BC and AB represents the "sine of angle A".

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