Reduction Formula (Grade 11 NSC Matric Mathematics): Quizzes

Express trig functions of compound angles in terms of $θ$

$\sin θ$

$\tan θ$

$\cos θ$

$\sin θ$

Trig functions equal when arguments are complementary

$\sin θ$

$-\sin θ$

When determining values of $90° ± θ$ or $θ ± 90°$

Symmetrical about the origin