+0  
 
0
79
2
avatar+303 

−5cos x=4

Select all correct solutions;

approximately 0.644

approximately 2.498

approximately 3.785

approximately 5.640

 Jan 10, 2021
 #1
avatar+303 
0

im pretty sure its 2.498 and 3.785

 Jan 10, 2021
 #2
avatar
+1

-5 cos x = 4

cos x = -4/5

Arcos x = x = arcos (-4/5) = 2.498 R   and  3.785 R

 Jan 11, 2021

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