Find the exact value.

Question

Find the exact value of the trigonometric function.

 

Figure: right triangle

Adjacent: 5

Opposite: 1

Hypotenuse: √26 

 

cot 2Θ=?

 

Answer 1

tan θ = 0.2  (1/5)

 

tan 2θ = (2 tan θ) / (1 - tan² θ)

 

Substitute 0.2 for tan θ and calculate.

 

cot 2θ is the inverse.