Answer:
0.07
Explanation:
We can write Sin 4° as the following
Sin 4°
= Sin (22° - 18°)
= Sin 22° Cos 18° - Cos 22° Sin 18°
{Since, we know the formula that Sin (A - B) = Sin A Cos B - Cos A Sin B}
= 0.3726 × 0.9511 - 0.9272 × 0.3090
{Since, given that Sin 22° = 0.3726, Cos 18° = 0.9511, Sin 18° = 0.3090 and Cos 22° = 0.9272}
= 0.3566 - 0.2865
= 0.07 (Answer)