Question

Can someone help me solving this trigonometric expression ?(2-cot theta) (2+cot theta)-3 csc^2 theta

Answer 1

csc^2 thetha+1=cot^2 thetha

Answer 2

replace it you get eq in cot thethe only
after that it is easy play

Answer 3

huh? I lost

Answer 4

can you see the formula just gave you

Answer 5

yea

Answer 6

replace csc^2 thetha in the equation

Answer 7

csc^2 thetha=cot^2 thetha+1
is the correct formula

Answer 8

my mistake

Answer 9

ok

Answer 10

thanks