APFIVE Sine Sum Identity From Table Data
What trigonometric identity is confirmed by the table above?
| $$\alpha$$ (°) | $$\beta$$ (°) | $$\sin(\alpha+\beta)$$ (approx.) | $$\sin(\alpha)*\cos(\beta)+\cos(\alpha)*\sin(\beta)$$ (approx.) |
|---|---|---|---|
| 30 | 45 | 0.966 | 0.966 |
| 45 | 30 | 0.966 | 0.966 |
A
$$\sin(\alpha+\beta)=\cos(\alpha)*\sin(\beta)$$
B
$$\sin(\alpha+\beta)=\sin(\alpha)*\cos(\beta)+\cos(\alpha)*\sin(\beta)$$
C
$$\sin(\alpha+\beta)=\cos(\alpha)*\cos(\beta)$$
D
$$\sin(\alpha+\beta)=\sin(\alpha)+\sin(\beta)$$
Question Leaderboard
| Rank | |||||
|---|---|---|---|---|---|
| #1 | mihikadarbha | 1 | 1 | 0m 28s | 72 |
| #2 | danurizayo | 1 | 1 | 0m 29s | 71 |
| #3 | chunxiangxu.cxu | 1 | 1 | 14m 40s | -780 |
Items per page:
10
1 – 3 of 3