Given that sin
⁡
A
=
9
82
sinA=
82


9

and
cos
⁡
B
=
1
5
cosB=
5


1

, and that angles
A
A and
B
B are both in Quadrant I, find the exact value of
cos
⁡
(
A
+
B
)
cos(A+B), in simplest radical form

Need solving this second acceleration problem.

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?