calculate this
arccos(-1/2)
pi/3
What is sin function
opposite/hypotenuse
What is the Law of Cosines?
c^2=a^2+b^2
What is tanget
What is tanget opposite/adjacent
arcsin(1/2)
=pi/6
What is opposite/hypothnuse
=sin
What is the abbreviation for cosine?
cos
abbreviation for tanget?
tan
arctan(squared 3/3)
=pi/6
arcsin(sin(7pi/4))
=-pi/4
arccos(sin(pi/6))
sin(arctan 3/4)
=3/5
cos(arcsin(1/2))
3 squared/2
True or False? Will sine work on any triangle?
True
When is it needed to use cosine?
When you're looking for a missing angle
cos(arctan(-1))
sin(arctan(squared 3))
=squared 3/2
What set of information cannot be used with the Law of Sines?.
one unknown angle and two known sides
what is cosine function?
adjacent side/hypotenuse
arctan(cos(pi))
= -pi/4