1. Г sin(140)= 0.64 cos(80)= 0.17 0.64 * 0.17 > 0
2.В sin(130) = 0.76 cos(100) = -0.17 0.76 * (-0.17) < 0
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Answers & Comments
1. Г sin(140)= 0.64 cos(80)= 0.17 0.64 * 0.17 > 0
2.В sin(130) = 0.76 cos(100) = -0.17 0.76 * (-0.17) < 0