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secondary 3 | E Maths
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Josephine
Josephine

secondary 3 chevron_right E Maths

Anyone can come up with an explanation+answer?

Date Posted: 7 years ago
Views: 565

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Bryant Lam Hong Sheng
Bryant Lam Hong Sheng's answer
97 answers (Tutor Details)
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By realising that BC = 100 steps x 30 cm each, you can eventually get BC = 30m. Hence, by using trigo (tan in this case), you can see that tan 38 degrees will equal to opposite over adjacent so tan 38 = AB/BC.