Angle x is a third quadrant angle such that cos x = -1/5.

What is the exact value of cos (x/2)?

Enter your answer, in simplest radical form, in the box.

cos (x/2) = ___

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

his first public project he is asked to create a small scale drawing. the garden is a right triangle with base 25m and height 30m. are you trying to solve for the last side/hypotenuse? the irrational form of the answer would be 5\sqrt{61}

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step-by-step explanation: