What is the general solution for cos(x)-sin(-x)=0 ?

The general solution for cos(x)-sin(-x)=0 is x=(3pi)/4+pin

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cos(x)-sin(-x)=0

cos (x) - sin (- x) = 0

x = \frac{3 π}{4} + πn

Solution steps

cos (x) - sin (- x) = 0

Rewrite using trig identities

1 + tan (x) = 0

Move

1

to the right side

tan (x) = - 1

General solutions for

tan (x) = - 1

x = \frac{3 π}{4} + πn

- 4 cos (x) = 0

7 cos^{2} (θ) - 3 = - 2 cos (θ) + 2

\frac{sin ( 2 x )}{2} = sin (x)

sin^{2} (θ) + sin (θ) - 6 = 0

y, x + tan (x y) = 0

What is the general solution for cos(x)-sin(-x)=0 ?
The general solution for cos(x)-sin(-x)=0 is x=(3pi)/4+pin