Предмет: Геометрия, автор: levickijvlad912

Знайти tg a, якщо sin a=дві сьомих, cos a=три чотирнадцятих

Ответы

Автор ответа: agatagor

1

Ответ:

Дано

sin a = 2/7

cos a = 3/14

Найти

tg a

Решение

tg = sin/cos

tg a = sin a/cos a

tg a = 2/7 : 3/14 = 2/7 × 14/3 = 2/1 × 2/3 = 4/3

Ответ: tg a = 4/3

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