NDA2019MathematicsTrigonometric Ratios & IdentitiesActual
If angle C of a triangle A B C is a right angle, then what is A + B equal to?
Options
- Aa^2-b^2 a b
- Ba^2 b c
- Cb^2 c a
- Dc^2 a b
Correct answer
D. c^2 a b
Step-by-step solution
we have c^2=a^2+b^2 aligned & A+ B= a b + b a & = a^2+b^2 a b = c^2 a b aligned