Question

1) 0
9.
(2+√3)² + (2-√3)² = k16
-(2-13)" = kto , then k is less than
3) 4
2)3
1) 1
Var​

Answer 1

Answer:

Step-by-step explanation:

As these three points are collinear, the area formed by a triangle formed by joining these three points will be 0.

∴∣∣∣∣∣−2−1cosθ013√sinθ111∣∣∣∣∣=0

⇒−2(13–√−sinθ)+1(−sinθ−cosθ3–√)=0

⇒2sinθ−sinθ−cosθ3–√=23–√

⇒sinθ−cosθ3–√=23–√

⇒3–√2sinθ−12cosθ=1

⇒cos(π6)sinθ−sin(π6)cosθ=sin(π2)

⇒sin(θ−π6)=sin(π2)

⇒θ−π6=π2

⇒θ=π2+π6=4π6=2π3