Which equation finds the value of x in the triangle below?

1) cot 70=x/12

Cot 70=[opposite side]/[adyacent side]=x/12

The option 1 is correct

2) cot 70=12/x

Cot 70=[opposite side]/[adyacent side]=x/12

The option 2 is not correct

3)sec 20=x/12

Sec 20 =1/cos20

Cos 20==[opposite side]/[hypotenuse]=12/z

1/(1/cos20)> 1/(12/z)> z/12

The option 3 is not correct

 
4) sec 20=12/x

Sec 20 =1/cos20

Cos 20==[opposite side]/[hypotenuse]=12/z

1/(1/cos20)> 1/(12/z)> z/12

The option 4 is not correct

2x^2+5x+17

your welcome. : )

i believe that the answer is

b. y-1=-2(x-4)

hope this !