# Thread: just started identities in summer school today in nedd of help.

1. ## just started identities in summer school today in need of help.

theta=(T) pie=(P) beta=(B)

1) simplify: (3(P)/2+(T))
2)if tan x = 2 find tan((P)/4+x)
3)if tan(T)= -12/5 and (T) lies in quadrant 2, then what is the value of cos2(T)
4)if cos(B)= -1/3 and (B)is a second quadrant angle find the tan2(B)
5)if sin A= -3/5 in quadrant 3, find cos2A

HERE ARE THE ANSWERS I JUST NEED THE WORK:
1)-cos(T)
2)-3
3)-110/169
4)4root2/7
5)7/25

2. Originally Posted by jimC
theta=(T) pie=(P) beta=(B)

1) simplify: (3(P)/2+(T))
2)if tan x = 2 find tan((P)/4+x)
3)if tan(T)= -12/5 and (T) lies in quadrant 2, then what is the value of cos2(T)
4)if cos(B)= -1/3 and (B)is a second quadrant angle find the tan2(B)
5)if sin A= -3/5 in quadrant 3, find cos2A

HERE ARE THE ANSWERS I JUST NEED THE WORK:
1)-cos(T)
2)-3
3)-110/169
4)4root2/7
5)7/25
If you've just started this work it's natural that you'll experience initial difficulty. Having someone do the work for you is not the way to overcome this difficulty.

It's better that you invest some time and effort in trying to do them yourself. Then post the work you've done and state where you get stuck.