Let ΔABC, the side opposite to ∠A is ‘a’ , side opposite to ∠B is ‘b’ and side opposite to ∠C is ‘c’. |
In a right angled triangle, 1) Adjacent side(A) is adjacent to the angle "θ" 2) Opposite side(O) is opposite the angle “θ", 3) the longest side is the Hypotenuse (H). |
1) Sine Function: Sinθ= Opposite/ Hypotenuse = O/H (SOH) 2)Cosine Function : Cosθ = Adjacent / Hypotenuse =A/H (CAH) 3)Tangent Function : tanθ = Opposite / Adjacent = O/A (TOA) 4) Cosecant Function : cosecθ = Hypotenuse / Opposite = H/O 5)Secant Function: Secθ = Hypotenuse /Adjacent = H/A 6) Cotangent Function : Cotθ = Adjacent / Opposite = A/ H |