A certain coin is a circle with diameter 18 mm. What is the exact area of either face of the coin? The exact årea of either face of the coin is mm2. (Simplify your answer. Type an exact answer in terms of re.)​

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

cool? what is the actuall ?

step-by-step explanation: