hernandez48tur
06.10.2019 •
Mathematics
Asinusoidal source is usually described by the function cos(ωt+ϕ), where the units of the frequency ω are radians/second and the units of the phase angle ϕ are degrees. this means that the product ωt has the units radians, which cannot be added to the phase angle in degrees. to evaluate the value of the sinusoidal source at a given time, you must transform the product ωt to degrees or the phase angle to radians before performing the addition in the cosine argument. if the voltage source is given by v(t)=50cos(2000t−45∘) mv, find v(392.7 μs). express your answer with the appropriate units.
Solved
Show answers
More tips
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
Ответ:
49.999999999999974312306505198184 V
Step-by-step explanation:
Step 1: you see 45°, which gives you a easy conversion ).
Now, , start replacing.
Ответ:
An obtuse triangle.
Step-by-step explanation:
We have given the different sides of a triangle that is Side A = 2, Side B = 8 and Side C = 7.
According to the question, we can tell the triangle is acute, obtuse or a right triangle.
We know that,
For given sides x,y,z of a triangle,
If = , then its a right triangle.
If < , then its an acute triangle.
If > , then its an obtuse triangle.
We have a = x = 2, b = z = 8 and c = y = 7.
Note: We always take z as the greatest side length.
Now,
We can see that, 4 + 49 < 64.
So, we can apply rule
if > , then its an obtuse triangle.
Therefore,
Given sides are of an obtuse triangle.