12 4 5 13 July 8, 2019 16 32 64 128 5 4 12 2x )= 13 Sinα 4 5 sinβ 12 13 4 5 2x + 12 136 4 5 x 12 13 James 4 13 5 12 Cosa 4 5 cosb 12 13 Sina 4 5 cosb =- 12 13 Cos 4 5 cos 12 13 12 13 4 m 5 − 3
