CBSE - Trigonometry

1 Trigonometry 

 If  2x  = secq =  and  2 / x  = tanq, then find the value of   2(x²-1/ x²)

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

2 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

3 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

4 Trigonometry 

The least value of   is

1) 4
2) 2Ö2
3) 2
4) Ö2

5 Trigonometry 

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

1) 30°
2) 60°
3) 90°
4) 70°

6 Trigonometry 

If sinθ – cosθ = √2sin(90°– θ) , then tanθ = 

(1) √2 – 1    
(2) √2    
(3) 1–√2    
(4) √2 +1

7 Trigonometry 

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

8 Trigonometry 

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

1) 0
2) 1
3) -Ö2
4) Ö2

9 Trigonometry 

(1 + tanθ + secθ) (θ+ cotθ – cosecθ) is equal to :

(1) 0  
(2) 2 
(3) 1 
(4) –1

10 Trigonometry 

If sin²A + sin⁴A = 1, the value of tan²A – tan⁴A is 

1) -1
2) 1
3) 0
4) 2