Math trig identities

sin² Θ + cos²Θ = ?

sin² Θ + cos²Θ = ?

1

1 + tan²Θ = ?

sec²Θ

1 + cot²Θ = ?

csc²Θ

SinΘ Cofunction

cos(PI/2 - Θ)

TanΘ Cofunction

cot(PI/2 - Θ)

SecΘ Cofunction

csc(PI/2 - Θ)

sin(-Θ) => -sinΘ

Odd

tan(-Θ) => -tanΘ

Odd

cos(-Θ) => -cosΘ

Even