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Question

Find the angle

      

Solution

Correct option is

We know,  

       

  

                

Since  so we again add and subtract 

                  

.

Testing

SIMILAR QUESTIONS

Q3

If   is an obtuse angle and  is an acute angle.

Q4

 

, then x + y + z is equal to 

 

Q6

The equation , where x is a variable, has real roots. Then the interval of p may be any one of the following:

Q7

 is equal to   

 

Q8

Let n be a +ve integer such that , then

Q9

 

Find the angle

      

Q10

Obtain the value of  in terms of cos–1 function.