Question

Найти cos t tg t ctg t если sin t равен -0,6

Answer 1

$cost= \sqrt{1-sin ^{2} t} = \sqrt{1-(-0.6) ^{2} } = \sqrt{1-0.36} = \sqrt{0.64} =0.8\\\\tgt= \frac{sint}{cost} = \frac{-0.6}{0.8} =-0.75\\\\ctgt= \frac{1}{tgt} = \frac{1}{-0.75} =-1: \frac{75}{100} =- \frac{100}{75} =- \frac{4}{3} =-1 \frac{1}{3}$