aspenlei
aspenlei aspenlei
  • 09-11-2017
  • Mathematics
contestada

If 1/4cotx - 11 = -9, then cotx = _____.

1/2
5
8
80

Respuesta :

tropicaia
tropicaia tropicaia
  • 09-11-2017
Answer: 
8 

Explanation: 
[tex] \frac{1}{4} [/tex]cotx – 11 = -9 
To solve algebraically, try to get cotx alone.
First, add 11 to both sides:
[tex] \frac{1}{4} [/tex]cotx – 11 + 11 = -9 + 11
[tex] \frac{1}{4} [/tex]cotx = 2 
Now divide by [tex] \frac{1}{4} [/tex] on both sides, which is the same as multiplying the other side by 4:
[tex] \frac{1}{4} [/tex]cotx ÷  [tex] \frac{1}{4} [/tex] = 2 ÷ [tex] \frac{1}{4} [/tex] 
cotx = 8
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