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20=-15cos22.5t+17 solve for t

 Dec 18, 2014

Best Answer 

 #1
avatar+130511 
+5

I'm assuming this is

20=-15(cos22.5)t+17   subtract 17 from both sides

3 = -15(cos22.5)t    divide both sides by -15(cos22.5)

3 / (-15cos22.5)  = t = about -0.2165

 

 Dec 18, 2014
 #1
avatar+130511 
+5
Best Answer

I'm assuming this is

20=-15(cos22.5)t+17   subtract 17 from both sides

3 = -15(cos22.5)t    divide both sides by -15(cos22.5)

3 / (-15cos22.5)  = t = about -0.2165

 

CPhill Dec 18, 2014

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