NCERT Solutions class-11 Maths Miscellaneous

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Miscellaneous Exercise

Prove that:

1.

Ans. L.H.S. =

=

=

=

= = 0 = R.H.S.


2.

Ans. L.H.S. =

=

=

= = 0 = R.H.S.


3.

Ans. L.H.S. =

=

=

=

= = R.H.S.


4.

Ans. L.H.S. =

=

=

=

= = R.H.S.


5.

Ans. L.H.S. =

=

=

=

=

=

= = R.H.S.


6.

Ans. L.H.S. =

=

=

=

= = R.H.S.


7.

Ans. L.H.S. = =

=

=

=

=

=

= = R.H.S.


Find and in each of the following:

8. in quadrant II.

Ans. Given: in quadrant II.

=

=

[ lies in II quadrant]

Also

lies in first quadrant.

are positive.

Now,


9. in quadrant III.

Ans. Given: in quadrant III.

Now,

lies in second quadrant.

are positive and are negative.

Now,


10. in quadrant II.

Ans. Given: in quadrant II.

=

=

[ lies in II quadrant]

Also

lies in first quadrant.

are positive.

Now,


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