A) \[{{\cos }^{-1}}\left( \frac{1}{24} \right)\]
B) \[{{\cos }^{-1}}\left( \frac{11}{16} \right)\]
C) \[{{\cos }^{-1}}\left( \frac{7}{8} \right)\]
D) \[{{\cos }^{-1}}\left( -\frac{1}{4} \right)\]
Correct Answer: B
Solution :
Use \[\cos A=\frac{{{b}^{2}}+{{c}^{2}}-{{a}^{2}}}{2bc}\].
You need to login to perform this action.
You will be redirected in
3 sec
