Question

пожалуйста помогите мяууууу​

Answer 1

Ответ:

1. = 87

2. =14

3. = - 2

Объяснение:

1.

$\frac{87 \times sin {371}^{0}}{ sin{11}^{0}} = \frac{87 \times sin( {360}^{0} + {11}^{0}) }{ sin{11}^{0} } =$

$= \frac{87 \times sin {11}^{0}}{sin {11}^{0}} = 87$

2.

$\frac{14 \times cos {203}^{0}}{cos {23}^{0}} = \frac{14 \times cos( {180}^{0} + {23}^{0}) }{cos {23}^{0}} =$

$= \frac{14 \times cos {23}^{0} }{cos {23}^{0}} = 14$

3.

$\frac{ - 2 \times tg {144}^{0}}{tg {36}^{0}} = \frac{ -2 \times tg( {180}^{0} - {36}^{0}) }{tg {36}^{0}} =$

$= \frac{ - 2 \times tg {36}^{0}}{tg {36}^{0}} = - 2$