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How do I solve this, sin to cot answer in fraction or integer?

How do I solve this, sin to cot answer in fraction or integer?-example-1
User IqqmuT
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1 Answer

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22 votes

The slope of the given equation is


m=-(A)/(B)

Where A = 2, and B = 1.


m=-(2)/(1)=-2

But, the slope is equal to the tangent function:


\begin{gathered} \tan \theta=m=-(2)/(1) \\ \end{gathered}

If we consider this tangent function about a right triangle, then the opposite leg is 2, and the adjacent leg is 1. Using Pythagorean's Theorem, we find the hypothenuse.


\begin{gathered} h^2=2^2+1^2 \\ h=\sqrt[]{4+1} \\ h=\sqrt[]{5} \end{gathered}

So, the sine function is


\sin \theta=\frac{2}{\sqrt[]{5}}\approx0.89

And, the cosine function is


\cos \theta=\frac{1}{\sqrt[]{5}}\approx0.45

The inverses are


\begin{gathered} \cot =(1)/(2) \\ \sec =\frac{\sqrt[]{5}}{1}\approx2.23 \\ \csc =\frac{\sqrt[]{5}}{2}\approx1.12 \end{gathered}

User Shervon
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