Lời giải:
a) sin 70o13' ≈ 0,9410
b) cos25o32' ≈ 0,9023
c) tan43o10' ≈ 0,9380
d) cot32o15' ≈ 1,5850
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Lời giải:
a) sin 70o13' ≈ 0,9410
b) cos25o32' ≈ 0,9023
c) tan43o10' ≈ 0,9380
d) cot32o15' ≈ 1,5850
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