我试图让 python 取一个结果值和角度值来返回向量的原始 i 和 j 值。我可以让它从 i 和 j 值到结果和角度,但反过来就很棘手。 #vector conversion (x,y) to resultant and angle#import mathmenu = input('Vector Conversion: for vector to (x,y) press 1. \n for (x,y) to vector press 2.')if menu == '2': user_distancex = float(input('What is the distance in x-direction?')) user_distancey = float(input('What is the distance in y-direction?')) r = (math.sqrt(user_distancex**2 + user_distancey**2)) theta = math.atan(user_distancey/user_distancex)*(180/math.pi) print(r, 'feet',theta, 'degrees')elif menu == '1': user_angle = float(input('What is the angle of your vector?')) user_resultant = float(input('What is the distance (resultant) of your vector')) x_dist = user_resultant*math.cos(math.degrees(user_angle)) y_dist = user_resultant*math.sin(math.degrees(user_angle)) print((x_dist,y_dist))
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慕田峪7331174
TA贡献1828条经验 获得超13个赞
math.degrees(user_angle)
将您的用户角度从弧度转换为度数。但是如果用户以度数输入它,它已经是度数了!
你应该math.radians(user_angle)
改用。
它还有助于澄清您的输入提示:
user_angle = float(input('What is the angle of your vector (in degrees)?'))
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