In ΔDEF, d = 5.3 cm, e = 2.4 cm and f=4.7 cm. Find the measure of ∠F to the nearest 10th of a degree.

Given:

In ΔDEF, d = 5.3 cm, e = 2.4 cm and f=4.7 cm.

To find:

The measure of ∠F to the nearest 10th of a degree.

Solution:

According to the law of cosine:

In ΔDEF,

Putting the given values d = 5.3, e = 2.4 and f=4.7, we get

Taking cos inverse on both sides, we get

Therefore, the measure of angle F is 62.5 degrees.

answer: 2 answers

step-by-step explanation: the first one means to spread the product throughout the marketplace such that a large number of people can buy it.  

the second means the process of making a product or service available for the consumer or business user that needs it.

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this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x