The variable k represents a value in the set (-2,-4, -6, -8}.
1 answer:
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Answer:
C) 12.5
The length of BC = 12.5cm
Step-by-step explanation:
<u><em>Step(i):-</em></u>
<em>Given that ΔABC</em>
<em>Given that AB = 15cm and ∠A = 40°</em>
<em>we will use trigonometric function</em>
<em> </em><em></em>
<em> </em><em></em>
<u><em>Step(ii):-</em></u>
we know that tan40° = 0.83909
BC = 15 × tan 40°
BC = 12.58649
BC = 12.5cm
<u><em>Final answer:-</em></u>
The length of BC = 12.5cm
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