Which equations could be used to solve for the unknown lengths of △ABC? Check all that apply.
1 answer:
Applying the trigonometric ratios, the equations that can be used are:
sin 45 = BC/9
cos 45 = BC/9
<h3>How to Apply the Trigonometric Ratio?</h3>In the given image below, to find the unknown lengths of the triangle, we would apply the following trigonometric ratios:
To find AC, use the cosine ratio, CAH.
To find BC, use the sine ratio, SOH.
sin 45 = opp/hyp = BC/9
sin 45 = BC/9
cos 45 = adj/hyp = BC/9
cos 45 = BC/9
Learn more about the trigonometric ratios on:
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Answer: The size of computer display after 20 % increase and then 20 % decrease= 96 % of the original size.
Step-by-step explanation:
Let the original size of computer be 100x , then if it increases by 20 %
then the new size of the computer=100x +20% of 100x
The size of computer after 20% increase= 120x
If size of computer is decreased by 20 % then
The new size of computer= 120x - 20% of 120 x
On comparing it to the original size , we get
Thus, the size of computer display after 20 % increase and then 20 % decrease= 96 % of the original size.