43. Calculator active problem.
If \( 0 \leq k \leq \frac{\pi}{4} \) and the area under the curve \( y = \sin x \) from \( x = k \) to \( x = \frac{\pi}{4} \) is 0.2, then what is the value of \( k \)?
Answer is: option3
Solution:
0.434
