Find all the values of x which satisfy the equation

(a)

(b) Show that the sum of the three angles whose tangent have the following values

, , is

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- Aug 24th 2009, 12:24 AMthereddevilsarctan ?
Find all the values of x which satisfy the equation

(a)

(b) Show that the sum of the three angles whose tangent have the following values

, , is - Aug 24th 2009, 01:28 AMmr fantastic
- Aug 24th 2009, 01:33 AMred_dog
Use the identity:

a)

The correct solution is

b)

- Aug 24th 2009, 03:10 AMthereddevils
- Aug 24th 2009, 06:31 AMpacmanarctan x + arctan 2x = pi/2
below is the graph of arctan x + arctan 2x = pi/2;

(sqrt of 2)/2 is indeed correct - Aug 24th 2009, 07:04 AMthereddevils
- Aug 24th 2009, 03:38 PMmr fantastic