Using the conditions below
sinA=3/4, A lies in quadrant 2
CosB=12/13, B lies in quadrant 1
Find the following:
Cos (A+B) Tan(A-B)
Cos B/2
Solve the equation in th interval [0,2pie)
2cos^2x-3cosx+1
Use Half angle forumlas to find the exact value of the expression
cos 22.5
cos^2 75 - sin^2 75
The file you uploaded to solve the double angle problem isnt showing up. Plus I have a couple more problems that need to be solved if you dont mind
Find the exact valuse of Sin2x Cos2x and tan 2x given tan=4/3 in the first quadrant.
and
Find the exact valuse of sin x/2 cos x/2 and tan x/2 when cosx= -5/13 and x is in the third quadrant
Thank you
~Kyle
Plus I have a couple more problems that need to be solved if you dont mind
Find the exact valuse of Sin2x Cos2x and tan 2x given tan=4/3 in the first quadrant.
and
Find the exact valuse of sin x/2 cos x/2 and tan x/2 when cosx= -5/13 and x is in the third quadrant
Thank you
~Kyle