DABC is a right-angled triangle, ÐB = 90o.
(i) 
In short,

In short,

tangent A
In short, tan A

(iv) cosecant
In short, 
In short,
(vi) cotangent
In short, 






![]()
(i) sin A is not sine x A
sin (A + B)
(iii) sin A + cos A
(sin + cos) A
