Today we will consider a cotangent of 210 degrees. We will draw a unit disk and we will write values of cotangents. Here what turned out.
![The unit circle and cotangent The unit circle and cotangent. Mathematics For Blondes.](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQewQ0EoBd3ajglZyRzeJNbX0OD5rq7JOidn91FXTC2rHjdwtBXKfe-zst6SZQR4DlsaB7bNnbc0zEEQqK_jmAwYD-DUpn6brhS8wzU450B2H0E5kUCpTZLAEawMD4uN0Pn32ZhFOTa4ju/s400/The+unit+circle+and+cotangent.jpg) |
The unit circle and cotangent |
Value of a cotangent of 210 degrees same, as at a cotangent of 30 degrees. We take mathematics in hand and we check. The cotangent is the cosine divided into a sine. Values of a sine and cosine of 30 and 210 degrees can be taken
here.
![Cotangent 210 degrees Cotangent 210 degrees. Cotangent 30 degrees. Mathematics For Blondes.](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhgFdjg15ah9dinVYcrngGehAujAUkq8MpRSmuoQFFlu6R5FRWhvptJTD5CWU4B1SsyqvCvIFr8pdkHuLSq4ccDHCIGf__-CRs6ZJR4Ph09ElJoe930eodJVuETpENMvuDUap_0fJLcXNoG/s400/cotangent+210+degrees.jpg) |
Cotangent 210 degrees |
We already know
how to divide fraction into fraction. Formulas of transformation of angles of trigonometric functions.
![Formulas of transformation of angles Formulas of transformation of angles of trigonometric functions. Mathematics For Blondes.](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBN_8TXAwqgrAv2yw5yoir-eczyZy_jSQoan_-SE-ww8fYHrpRj8mHvq2BpNbCkHPfzeNM1hjjmp0jxz0QSLQ0chumR6pnsFARCIQ6mnwrJJCnO3XP0fIAivnovwrKPyhgyOMwkMUKaMQF/s400/Formulas+of+transformation+of+angles.jpg) |
Formulas of transformation of angles |
These formulas will be very useful to you.
No comments:
Post a Comment