mayurimjani
mayurimjani mayurimjani
  • 25-06-2016
  • Mathematics
contestada

evaluate: sin (225degree)

Respuesta :

olemakpadu
olemakpadu olemakpadu
  • 26-06-2016
sin(225)

225 degrees is in the 3rd quadrant.  And in the third quadrant only tangent is positive,  sin is negative.

For third quadrant, basic angle = 225 - 180 = 45

sin225 = - sin45

sin225 = - sin45 = -0.7071

sin 225° ≈ -0.7071 
Answer Link

Otras preguntas

The subordinating conjunction. In this setence The sign said the speed limit would decrease after the road turns to the right.
when analyzing a speech, you should first_______ the speakers main________. A P E X
Use your knowledge of Greek and Latin roots to find the word which best replaces the underlined word. My mother wanted to augment the amount of chores I had, bu
Two 2 kg masses is placed at either end of a rod that has a mass of .5 kg and a length of 3 m. What is the moment of inertia if the system it is rotated about (
The Water Is Wide” uses which of the following? A Flatted notes on the treble strings B Natural notes on the bass strings C Sharped notes on the bass strings D
differentiate y=x⁴(1-2x⁵)⁶(5-8x³)².​
PLEASE HELPPP ASAP!!!! given the equation x^2 + 6^2=8^2 label the sides of the triangle.
What is one way the use of a first-person narrator creates tension in the passage?
What am I doing wrong? I've tried every conceivable answer, I thought I knew this type of math well, but this program keeps telling me I'm wrong.
Which statement best describes the United States in the 1920s?