1f 1 sin A + 1 sinB + 1 sinC =0. prove that: (sin A + sin B + sin C) ^ 2 = sin^2 A + sin^2 B + sin^2 C.

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?