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in the figure, if CD = 15 cm, then BC
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Answer:

answer is 21.6

Step-by-step explanation:

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raphealnwobi

The length of side BC in the triangle is 21.5 cm.

What is trigonometric ratio?

Trigonometric ratio is used to show the relationship between the sides and angles of a right angled triangle.

Hence:

tan(40) = AB/BC

AB = BCtan(40)

Also:

tan(70) = AB/BD

AB = BDtan(70)

BCtan(40) = BDtan(70)

BC = CD + BD = 15 + BD

(15 + BD) * tan(40) = BDtan(70)

BD = 6.5 cm

BC = 6.5 + 15 = 21.5 cm

The length of side BC in the triangle is 21.5 cm.

Find out more on trigonometric ratio at: https://brainly.com/question/24349828

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