- Home
- Standard 11
- Mathematics
9.Straight Line
easy
The area of the triangle formed by the line $x\sin \alpha + y\cos \alpha = \sin 2\alpha $and the coordinates axes is
A
$\sin 2\alpha $
B
$\cos 2\alpha $
C
$2\sin 2\alpha $
D
$2\cos 2\alpha $
Solution

(a)$\Delta = \frac{1}{2}(2\sin \alpha .2\cos \alpha ) = \sin 2\alpha $
Standard 11
Mathematics