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anzhelika [568]
3 years ago
14

∠A and ∠B are complementary angles.

Mathematics
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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