+0  
 
0
935
2
avatar

1) Given cot A = 8/15, which angle is A?

 

 

 

2) Given sec A = 17/8, which angle is A?

 

 

 Sep 25, 2014

Best Answer 

 #2
avatar+118587 
+5

NOTE:   On the forum calc    tan^-1 is    atan

inverse tan is the same as arc tan!

 Sep 26, 2014
 #1
avatar+23245 
+5

1) Since cot = 1/tan ---> tan = 1/cot

     Thus cot A = 8/15 ---> tan A = 15/8 --> A = invtan(15/8)

     Enter (2nd) tan(15/8) ---> A = 10.77°.

 

2) Since cos = 1/sec  --> sec =1/cos

    Thus sec A = 17/8 ---> cos A = 8/17 ---> A = invcos(8/17)

    Enter (2nd) cos(8/17) ---> A = 61.93°

 Sep 25, 2014
 #2
avatar+118587 
+5
Best Answer

NOTE:   On the forum calc    tan^-1 is    atan

inverse tan is the same as arc tan!

Melody Sep 26, 2014

3 Online Users

avatar
avatar