Hi all.
Very stumped on this one, so a step by step guide would be amazing
cos theta = 0.53 where 0 _< theta _< 2pi
the "_<" means greater or equal to.
Thanks!
Hi FlexedCookie,
$\displaystyle \cos\theta=0.53\mbox{ where }0\leq\theta\leq2\pi$
The cosine function is positive in the first and fourth quadrants. Therefore,
$\displaystyle \theta=\pm\cos^{-1} 0.53$
You can find $\displaystyle \cos^{-1} 0.53$ using a trigonometric table or the calculator. Hope this clarifies your problem.