14
If $\triangle$ ABC is right-angled at C, then the value of $\cos (A + B)$ is :
- (a)$1$
- (b)$\frac{1}{2}$
- (c)$\frac{\sqrt{3}}{2}$
- (d)$0$
Show SolutionHide Solution↓
(D) $0$
If △ ABC is right-angled at C, then the value of (A + B) is :
CBSE Class 10 Maths PYQ · Trigonometry · Find T-ratio or value of Expression · 1 Mark · July 2025 · Standard
Solve it yourself first — then press ↓ or tap Show Solution. Use ← → for previous / next question.