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標題:
Maths S.3
發問:
Find the acute angle between the diagonals of a rectangle whose length and width are 12 cm and 9 cm respectively. ans : 73.7 (degrees) Please help :(
最佳解答:
其他解答:
The length of the diagonal = √(12^2 + 9^2) = 15 cosθ = 9/15 θ = 53.13° 180° - 2(53.13°) = 73.7° (corr. to 3 sig. fig.)
Maths S.3
發問:
Find the acute angle between the diagonals of a rectangle whose length and width are 12 cm and 9 cm respectively. ans : 73.7 (degrees) Please help :(
最佳解答:
此文章來自奇摩知識+如有不便請留言告知
The actual angle between the diagonal and the width satisfies tan x=12/9 or x=53.13 So the acute angle between the diagonals of a rectangle =180-53.13-53.13 =73.7 HAVE A NICE DAY其他解答:
The length of the diagonal = √(12^2 + 9^2) = 15 cosθ = 9/15 θ = 53.13° 180° - 2(53.13°) = 73.7° (corr. to 3 sig. fig.)
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