Which of the following is NOT permitted when verifying trigonometric identities? a. simplifying one side of the identity to match the other side

b. cross multiplying if the identity is a proportion

c. simplifying each side of the identity separately to get the same expression on both sides

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?