Also for my second problem it has to be between 0<x<pi/2 0<y<pi/2
Hello! I have two problems I need help on.
use sum or difference to find the exact value of each trigonometric function.
cot 113pi/12
I know this equals= 4(360)+255
and 255 is 210+45
So I did
cot(210)+cot(45)/(1-cot(210)(cot45)
Which gives me -3.739 But I am quite sure this is wrong.
my second problem is
cos(x+y)= tanx(5/3) and sin y=1/3
I am quite confused on this one
Can anyone help me with these problems?
I have another quick question well actually 2
My first one is to find the sec(1275 degrees)
I have sec(1275)= 3(360)+195
sec(135)sec(60)+csc(135)csc(60)
I got -1.193 Did I do this one right?
On my second problem
cos(x+y)= tanx(5/3) and sin y=1/3
I did square root 1-(1/3)^2 and I got cosy= .942
Then I solved the triangle using tanx(5/3) and I got cosx=.514
I know siny= 1/3
So I did square root 1-.514^2 and got sinx= .8577
So I guess to find answer I must do cos(.514)cos(.942)+sin(.8577)sin(1/3)?