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

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

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cos(a)=-sin(a)

cos (a) = - sin (a)

a = \frac{3 π}{4} + πn

Solution steps

cos (a) = - sin (a)

Rewrite using trig identities

- tan (a) = 1

Divide both sides by

- 1

tan (a) = - 1

General solutions for

tan (a) = - 1

a = \frac{3 π}{4} + πn

\frac{8}{sin ( 4 5 ^{\circ} )} = \frac{42}{sin ( x )}

sin (x) cos (x) = 3

- 2 cos^{2} (4 x) + 2 sin (4 x) - 1 = 0

cos (θ) = \frac{75}{10}

tan (x) = \frac{50}{30}

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