11th Class Math MCQS Chapter 9

Cos ? + Sin ? tan ? =

csc ?

sec²2?

sec ?

sec 2?

2tna?/1 + tan2 ? =

sin ?

cos2 ?

cos ?

sin2 ?

(22 1/2°) =

?/2 rad

?/8 rad

?/8 rad

The word trigonometry means

Measurement of triangles

Measurement of angles

Science of triangle

Science of circle

Which one is true:

1 rad < 1°

1 rad = 1°

a rad > 1°

5 rad = 2°

If cos?=12/13 and the terminal side of ht angle is not in the i quadrant then cosec? =

13/5

-5/13

5/13

13/-5

The 60^th part of one degree is called one:

Degree

Minutes

Radian

Second

If Cot? = 15/8 and ? ?1^st – quadrant then Cos ? =

8/-5

-5/17

15/7

-15/17

If sin0 < 0 and cos0 > 0 then the terminal arms of angle lies in

3^rd quadrant

1^st quadrant

2^nd quadrant

4^th quadrant

If cot ? > 0 and sin ? then terminal arm of ? Iies in

2^nd Quad

3^rd Quad

4^th Quad

1^st Quad