Find the exact solutions of x in the interval (0,2pie); sin(2x) = cos(x)

Why do interests rates on loans to be lower in a weak economy than in a strong one

What is the equation of a line that passes through points (0, 4) and (-4,-8)?

Which of these side lengths could form a triangle a) 2 cm , 2 cm , 4 cm b) 3 cm , 5 cm , 10 cm c) 3 cm , 4 cm , 5 cm d) 4 cm , 8 cm , 15 cm