Question

$\cos \left({\sin }^{-1}\frac{5}{13}\right)=$

• A. 12/13
• B. 5/12
• C. 5/13
• D. 13/5

Answer 1

Answer: (A)

${\sin }^{-1}\frac{5}{13}={\cos }^{-1}\frac{12}{13}$