Class 10 maths Introduction to Trigonometry Hots Questions

0

072920 77839
info@smartachievers.in

Topic Question Set

Q 11 :
If $\tan^{2} θ + \cot^{2} α = 2,$ where $θ = 45 ° and θ ° \leq α \leq 90 °,$ then the value of a is :

30°
45°
60°
90°

1

2

3

4

(2) 45°

Q 12 :
If $\sin θ = \cos θ,$ $(0 ° < θ < 90 °),$ then value of $(\sec θ . \sin θ)$ is:

$1 / \sqrt{2}$
$\sqrt{2}$
$1$
$0$

1

2

3

4

(3)

$\sin θ = \cos θ \Rightarrow \tan θ = 1 = 45 ° \Rightarrow θ = 45 °$

Now, $\sec θ . \sin θ = \sec 45 ° . \sin 45 ° = \sqrt{2} \times \frac{1}{\sqrt{2}} = 1$

Want Us to Email you About Special Offers & Updates?