jess3173 jess3173
  • 10-10-2019
  • Mathematics
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What is BC? Given ABC is a right triangle with right angle C? AC= 15 centimeters and m

What is BC Given ABC is a right triangle with right angle C AC 15 centimeters and m class=

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jimrgrant1 jimrgrant1
  • 10-10-2019

Answer:

BC ≈ 12.6 cm

Step-by-step explanation:

Since the triangle is right use the tangent ratio to find BC

tan40° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{BC}{15}[/tex]

Multiply both sides by 15

15 × tan40° = BC, hence

BC ≈ 12.6 cm ( to 1 dec. place )

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