SOLUTION: arcsin(sin(10pi/3))+ arccos(cos(11pi/6))= A) pi/2 B) pi/6 C) pi/3 D) pi/4

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Question 1200189: arcsin(sin(10pi/3))+ arccos(cos(11pi/6))=
A) pi/2 B) pi/6 C) pi/3 D) pi/4
Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
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arcsin(sin(10pi/3))+ arccos(cos(11pi/6))=
A) pi/2 B) pi/6 C) pi/3 D) pi/4
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The correct answer   -pi%2F6   is  NO  ONE  of the values of the answer list.

The problem is  DEFECTIVE:   it is posed incorrectly.


A ticket and the lowest possible mark to the person who created it.

This person,  obviously,  does not know the basics of the subject.


I am in doubt if this  " problems composer "  could pass an exam in  Math.