Question

cos2q+sin2q=0 then q=?
cos2q-sin2q=0 then q=?

Answer 1

it is apparent that both cos and sin have equal values and it should be zero
so such an angle doesnt exist!!

Answer 2

let x = cos(2q) and y = sin(2q) then do systems of linear equations

Answer 3

i think this are two separate questions...

Answer 4

i wonder if theres any complex solution..

Answer 5

2 for 1 :)

Answer 6

There are two different question

Answer 7

ohh.. :D

Answer 8

1º 3Pi/8
2º pi/8

Answer 9

still,,if we treat them as simultaneous equations,,is any complex solution there?

Answer 10

no