Question

If cos X = 2/3 then tan X is equal to:​

Answer 1

Answer:

sin x= 4/3

tan x = sin/cos

= 4/3/2/3

4/2

= 2

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Answer 2

Answer:

Step-by-step explanation:

cos x=2/3

cox = adjacent

         hypotenuse

2=BC

3  AC

therefore BC=2,AC=3

AB² + BC²=AC² [ pythagorean therom}

AB² + 4 = 9

AB=√5

Tan x = opposite side

             adjacent side

         =√5

             2

Now we use formula

sin(x/2) =+sqrt((1-cos(x))/2)

sin(x/2) =+sqrt((1+2/3)/2) = sqrt(5/6)

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