Question

(3 cos a + 10 sin a)/ cos a, якщо tg = 4

Answer 1

$\frac{3Cos\alpha+10Sin\alpha}{Cos\alpha}=\frac{3Cos\alpha}{Cos\alpha}+\frac{10Sin\alpha}{Cos\alpha}=3+10tg\alpha=3+10*4=43$