Need

suppose your mom or dad asks you to make a triangular garden in the backyard you know that one side of your yard (ac) is 100 yards long and another side (ab) is 250 yards in order for the garden to fit and not cross into the neighbors yard what must be the measure of angle b if angle c measures 95%

Acircle has a circumference of 28.36 units what is the diameter of the circle

The probability that you roll a two on a six-sided die is 1 6 16 . if you roll the die 60 times, how many twos can you expect to roll

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .