CBSE - Trigonometry

1 Trigonometry 

If A,B are acute angle and sinA = cosB, then the value of A + B =? 

1) 30°
2) 60°
3) 90°
4) 70°

2 Trigonometry 

If a cosθ – bsinθ = c, then asinθ + bcosθ = 

3 Trigonometry 

If 2y cosθ=xsinθ and 2xsecθ-ycosecθ= 3, the value of x² + 4y² is

(1) 2
(2) 1
(3) 0
(4) 4

4 Trigonometry 

The least value of   is

1) 4
2) 2Ö2
3) 2
4) Ö2

5 Trigonometry 

If tanθ  = -1 then find the value of  secθ + cosecθ / cosθ - sinθ

1) 0
2) 1
3) -Ö2
4) Ö2

6 Trigonometry 

If sinx + cosecx = 2, then (sin¹⁰x + cosec¹⁰x) is equal to:

(1) 3 
(2) 0
(3) 1 
(4) 2

7 Trigonometry 

If then the value of θ is:

(1) 60° 
(2) 30° 
(3) 90° 
(4) 45°

8 Trigonometry 

 If  secø + tanø = 4, then sinø and cosø = ?

1) 2/17, 3/17
2) 15/17 , 8/17
3) 5 / 6
4) 7 / 6

9 Trigonometry 

If ABCD is a cyclic quadrilateral, the value of tanA/2 tanC/2 + tanB/2 tanD/2

1) 0
2) 1
3) -1
4) 2

10 Trigonometry 

The value of sin²q + 1/ (1 + tan²q) is

1) sin²q
2) cos²q
3) sec²q
4) 1