Interpreting Equivalent Expressions Determine the value of the variable in the simplified expressions. What is the value of x? 1 gł+ h-3- + What is the value of y? bºc-7 = c​

sounds & other waves originate from any vibrating object

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64