2 years ago

If cos A= .5410 and A is an angle between 0 and 90

1 answer:

8 0

When you have a cosine value, in order to get the angle you have to look up the arc cosine value
arc cosine .5410 = 57.248 degrees
here's a good trig calculator
http://www.1728.org/trigcalc.htm

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2 years ago

Read 2 more answers

Marisol is painting on a canvas that has an area of 180 square inches. The length of the painting is 11/4 times the width. What

Alona [7]

Notice the picture below, see the length "l"?

well $\bf Area=l\times w\qquad 
\begin{cases}
l=\frac{11}{4}w\\
Area=180
\end{cases}\\\\
-----------------------------\\\\
thus
\\\\
180=\cfrac{11}{4}w\times w$

solve for "w", to find the width,

what's the length? well, l = 11/4 w