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anzhelika [568]

3 years ago

14

∠A and ∠B are complementary angles.

1 answer:

iogann1982 [59]3 years ago

3 0

Cos 52 = 0.6157

sin 42 = cos 48 = 2/3 (because 42 + 38 = 90 - complementary angles)

if tan 20,5 = 3/8 then tan 69.5 wil = 1 / 3/8 = 8/3

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$y-y_1=m(x-x_1)
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