1.solve for x in for 0<orequalx<or equal rads 2. find the exact value of
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Here is the graph of the function in the left side of the equation. The equation has one solution between 3 and 4.
my bad
Last edited by mathaddict; Jul 29th 2009 at 11:43 PM.
Originally Posted by mathaddict (1) sin^2 x +cos^2 x + sin x -2 sin x cos x =0 sin x (1- 2 cos x )=0
Hello william What do you mean? This doesn't make sense. Originally Posted by william ... 2. find the exact value of If you mean 'Find the exact value of ', then the answer is that , and . So...? Grandad
Originally Posted by red_dog Here is the graph of the function in the left side of the equation. The equation has one solution between 3 and 4. By a numerical method, I got , correct to 4 d.p. Are you sure we have the correct question here? Grandad
I tried another way, but that doesn't lead to an exact solution. Divide by and let which is not good because which has an irational solution.
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