Find the exact value of each trigonometric function using the unit circle

Mathematics

1 answer:

SashulF [63]3 years ago

5 0

Answer:

Step-by-step explanation:

use the co-terminal idea Scarlett, 990° = 270 °. You can see this just by looking at the picture.

Tan(270 ) = sin(270) / cos(270) = -sin(90) / cos(90) so now we know that Tan(270) is one of the non-existant angles b/c cos(90) = 0 and that would mean that we have some number over 0... and then the universe blows up.. like my calc II professor liked to say :| I think he was being a bit dramatic. :P anyway, you want answers not long boring stories.. :D so Tan(270) DNE ( does not exist )

If we were to look at a graph of Tan , we'd see that at 270° or 3 $\pi$ /2 , Tan runs off to infinity. So there isn't a number to represent it. :/ I'm attaching a picture of the graph

notice in the graph, that when tan gets to 3/2, it's running off to infinity ??

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Can anyone explain to me me how long division works briefly or in detail? For 20pts?

KIM [24]

If you have 1275 ÷ 4, you write it as shown, with 1275 on the inside and 4 on the outside. then you go digit by digit and find how many times 4 goes into the number. it goes into 1 zero times, so an imaginary 0 is put in the first spot above the 1. next, 4 goes into 12 three times, so 3 is written above the 2. After that, subtract 4×3 from 12, which leaves 0, and bring down the 7. 4 goes into 7 once with a remainder of 3, so a 1 is put up top and the 5 brought down next to the three. 4 goes into 35 eight times with a remainder of 3,so 8 is written up top. the 3 is the remainder, written as R3. so your answer is 1274÷4= 318 R3.
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