lukey5248 lukey5248
  • 13-09-2018
  • Mathematics
contestada

By using sum or difference formulas, cos(π−x) can be written as

Respuesta :

crisforp
crisforp crisforp
  • 13-09-2018

We have cos( x - y ) = cosxcoy + sinxsiny <=> cos ( π - x ) = cosπcosx + sinπsinx <=> cos ( π - x ) = (-1)cosx + 0sinx = -cosx;

Answer Link

Otras preguntas

)Which explanation provides the best evidence to support the interpretation that Caesar's pride led to his downfall? Caesar sleeps peacefully through the night
what are the two sides that form the right angle of a right triangle called?
Donde se dessarrolla el corsario negri
Charles dickens childhood experiences most likely contributed to his
Match the bolded phrases to their meanings in the context of this excerpt from William Shakespeare's Sonnet 2.
Which is greater 5 pounds or 81 ounces
A trapezoid has sides of length 19 meters, 4.4 meters, 19 meters, and 17.2 meters. What is the perimeter?
Which Two Numbers Add Up To 7 And Multiply To 12?
Which person has a favorable view of Rome
What is the second to smallest number with the factors 1,2,3,4, and 5?