Exercise $5[06$ points$].$ The following problems will help us to estimate $sin(1\mathrm{.}99)$ using what is called a linear approximation. It is basically using a tangent line at a "good" number a near $1\mathrm{.}99$ to approximate $sin(1\mathrm{.}99).$

$26.$ Find the function we would be considering $y=$

$27.$ Find the number $a$ at which we will find the tangent line $($Write $$ as $\frac{\frac{?}{?}}{})a=$

$28.$ Find the linearization $L(x)$ at a which is the tangent line of the function at $a($write it as $L(x)=mx+b.$ Write $$ as $\frac{\frac{?}{?}}{}$

$29.$ Using $L(x),$ find the approximation $($write it using decimal numbers and $$

$$

I have been able to find each solution other then y I thought it was the same thing as Lx could you tell me what y would be in this situation