Question

--обчислити 3cos180°-5ctg270°-2sin560° -tg²60°
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Answer 1

3cos180°-5ctg270°-2sin560° - tg²60° = 3×(-1) - 5×0 -2×sin200° - (√3)² = - 3 - 3 - 2 × (-0,34) = - 6 + 0,68 = - 5,32

(sin200°  ≈ - 0,34 )