Angles ∝ and β are the two acute angles in a right triangle. use the relationship between sine and cosine to find the value of β if β > ∝. sin( x/2 + 20) = cos(2x - 25/2 ) a) 25° b) 33° c) 36.5° d) 53.5°

Aliter of water contains about 3.35 x 10^25 molecules. a certain river discharges about 2.9x 10^8 l of water every second. about how many molecules does the river discharge every minute? write your answer in scientific notation