Rules of Complementary

Question 1

If θ₁ + θ₂ = 90° then tan and cot

Answer 1

Tanθ₁ . Tanθ₂ = 1

same for Cot

Question 2

If θ₁ + θ₂ = 90° then sin and cos

Answer 2

sin²θ₁ + sinθ₂ = 1

same for cos

sinθ₁ / cosθ₂ = 1

cosθ₁ / sinθ₂ = 1

Question 3

If A + B + C = 90°, tan and cot

Answer 3

tanA.tanB + tanB.tanC + tanC.tanA = 1

cotA + cotB + cotC = cotA.cotB.cotC