Good day,hope I'm welcome
I'm having problem solving these
Find the circular functions of the following:
a. 36 deg
b. 22 deg and 30 minutes
c. 15 deg = ( 30 deg / 2 )
For a. I tried to find special angles(30,60,45,and other quadrantal angles) that would sum up to 36 deg , but I just can't find any.
Same goes for letter b.
And for letter c. I can't think of any procedure that will direct me to the correct answer, using 30 deg / 2.
Hoping for replies.
Thanks
Are you asking for their radian measure?
Remember that a "radian" is the length of a radius on the circumference of a circle. Since it is the length of the radius on the CIRCUMFERENCE, it is given the symbol C.
If the circle has unit radius (i.e. radius = 1), then
.
So there are radians in a circle.
Recall that there are also in a circle.
So
So .
So to find the number of radians in a certain number of degrees, multiply by
.
Never mind my other question. I had an error there
My question was supposed to be
"when should I use these identities
tan^2 y /2 = 1 - cos y / 1 + cos y
tan y /2 = 1 - cos y / sin y
tan y /2 = sin y / 1 + cos y
since they are all Tangent-Half-Measure Identities" I was thinking they are all of different uses
Later on I found out they are all just equal, After some computations
As for letter a. how should I solve it?
Anyway thanks for the help!
And HAPPY NEW YEAR TO ALL, its December 31, 2008 here waiting for the New Year to come 1 hour or so from now its already 2009!!