Question

If triangle ABC is right angled at C, in which AB = 29 units, BC = 21 units and angle ABC = a.
Determine the values of cos square a + sin square a is
(a) 0
(b) 1
(c) 1/2
(d) n.d.​

Answer 1

Answer:

I think so option c........ if it is wrong than sorry.....