<u>Answer:</u>
The value of cos 45 degrees in simplified radical form is 0.70710 approximately.
<u>Solution:</u>
Given, Cos of angle 45 degrees.
We have to find the value of the Cos of 45 degrees in radical form.
From trigonometric ratios,
Cos of angle 45 degrees = cos 45 = 
Multiplying numerator and denominator with square root of 2

The value of square root of 2 is 1.414213

Hence, the value of Cos of angle 45 degrees is 0.70710 approximately
Answer:
120
Step-by-step explanation:
A proportion can be called as an equation to check two ratios are equal to each other or not.
Whenever the terms of a proportion are cross multiplied, the cross products will always be equal.
So to check this we can find the cross products to check if two ratios are equal and if they are equal,they are in proportion. To find the cross products of a proportion, we multiply the extremes, and the means.
Answer:
58.4 seconds
Step-by-step explanation:
Find the average of all the seconds by dividing the sum of the seconds by 4
Answer: 14ft
Step-by-step explanation: 12*5 = 60, 840/60 = 14ft