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Sagot :
Answer:
BC ≈ 4.17
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos43° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{BC}{5.7}[/tex] ( multiply both sides by 5.7 )
5.7 × cos43° = BC , then
BC ≈ 4.17 ( to 3 sf )
Use SOH CAH TOA
label sides hypotenuse, adjacent
cos43 = adjacent / hypotenuse
BC/AC = BC/5.7
x both sides by 5.7
5.7 x cos43 =BC
BC = 4.17(3sf)
label sides hypotenuse, adjacent
cos43 = adjacent / hypotenuse
BC/AC = BC/5.7
x both sides by 5.7
5.7 x cos43 =BC
BC = 4.17(3sf)
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