allison908 allison908

19-07-2017
Mathematics

contestada

∠A and ∠B are complementary angles.
cos52°= what
f sin42°=2/3, then cos48°= what
If tan20.5°=3/8, the tan69.5°= what

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Аноним Аноним

19-07-2017

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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