sharpek6 sharpek6
  • 11-09-2019
  • Mathematics
contestada

What is the cofunction of cos 2pi/ 9

Respuesta :

musiclover10045
musiclover10045 musiclover10045
  • 11-09-2019

The cofunction of cos is sin(90-x)

90 degrees is equal to PI/2

The cofunction becomes sin(PI/2 - 2PI/9)

Rewrite both fractions to have a common denominator:

PI/2 = 9PI/18

2PI/9 = 4PI/18

Now you have sin(9PI/18 - 4PI/18)

Simplify:

Sin(5PI/18)

Answer Link

Otras preguntas

This is sooo confusing
3x-3(x+1)=3 solution for x need help
how did the alliances system that developed in the early 1900s help cause world war 1
Describe the role of the council of nobles. What do we call this body today? I need 6 sentences (at least)
If i randomly pick 3 red cards from a deck of card and throw them away, and then give you the deck of card to draw a random card, what is the probability of dra
I need help with this geometry question
How much does copernicium cost?
A standard deck of cards has 52 cards, 13 of each of the 4 suits: hearts, diamonds, clubs, and spades. After shuffling the deck, Linbo deals the cards to his fr
Hexagon DEFGHI is translated on the coordinate plane below to create hexagon D'E'F'G'H'I': Hexagon DEFGHI and Hexagon D prime E prime F prime G prime H prime I
Which statement best is paraphrase evidence to support the conclusion that Gilgamesh is a fierce warrior?