+0  
 
0
38
3
avatar+108 

Help!! Please!! Thank you!!

mathelp  May 2, 2018
Sort: 

3+0 Answers

 #1
avatar+86528 
+2

First one :

We know an opposite side and an adjacent side....the tangent seems most appropriate, here

So we have

 

tan x  = 11/9       use the tan  inverse  (atan) to find x

atan (11/9)  =  x ≈  50.71° = 51°

 

 

 

Second one....

 

tan Y  = 6/7          tan Z  = 7/6

 

 

Third  one :

 

We know an angle, the hypotenuse and we are looking for an adjacent side to the angle....the cosine is what we need

 

cos (26)  = x / 10   multiply both sides by 10

 

10 cos (26)  = x   ≈  9

 

 

Fourth one :

 

We know an angle, the adjacent side....and we are looking for the hypotenuse....the cosine, again....

 

cos36  = 12 / x       divide both sides by cos 36......multiply both sides by  x

 

x   =  12  / cos 36  ≈  14.8

 

 

Last one

We know an angle, an adjacent side....and we are looking for the opposite side.....the tangent seems good

 

tan  40  = x / 5       multiply both sides by  5

 

5 tan (40)  = x  ≈  4.2

 

 

 

cool cool cool

CPhill  May 2, 2018
 #2
avatar+108 
+1

Thank you! Thank you! I've been stuck on them. I appreciate the help! smiley

mathelp  May 2, 2018
 #3
avatar+86528 
+1

OK....no prob   !!!!

 

 

cool cool cool

CPhill  May 2, 2018

33 Online Users

avatar
New Privacy Policy (May 2018)
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  Privacy Policy