Given cos = -2/5 a in quadrant iii and cos b = 1/4, b in quadrant i find

sin(a+b)
cos(a+b)
tan(a+b)

Which logarithmic equation is equivalent to the exponential equation below? e^a=55(you will receive 34 points)

The two expressions below have the same value when rounded to the nearest hundredth. log5 b log9 48 what is the approximate value of log b to the nearest hundredth? 0.93 1.23 9.16 65.53

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number