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I need help with the second one and I tried the others but I'm not sure if the answers I got are correct. I need to use trigonometry and I have a difficult time with it. Please help with these. Thanks in advance.

 Oct 16, 2019
 #1
avatar+6045 
+1

....

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 Oct 17, 2019
edited by Rom  Oct 18, 2019
 #2
avatar+104911 
+1

First one.....good!!!

Third one.......good!!

 

Last one......

 

We know  the adjacent side to the angle  and we need to find the hypotenuse

 

Thw cosine relates these

 

So    we have that

 

cos 67°  =  5  /  x           rearrange as

 

x  =  5 / cos 67°  ≈   12.8

 

 

 

cool cool cool

 Oct 17, 2019

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