1 math question ?
The legs of a right triangle measure 6 inches and 11 inches.
What is the measure of the smallest angle of the triangle?
Enter your answer, rounded to the nearest tenth of a degree, in the box.
6 Answers
- KrishnamurthyLv 71 year agoFavorite Answer
The legs of a right triangle measure 6 inches and 11 inches.
What is the measure of the smallest angle of the triangle?
Enter your answer, rounded to the nearest tenth of a degree, in the box.
∠α = 28.61° = 28°36'38" = 0.49935 rad
- DavidLv 71 year ago
Smallest angle is opposite smallest side and it is arctan(6/11) = 28.6 degrees to the nearest tenth
- ?Lv 61 year ago
Units are [''].
Legs are AC = b = 11 and AB = c = 6.
a^2 = b^2 + c^2, ie., a^2 = 11^2 + 6^2 = 157.
Clearly, the smallest angle in the triangle will be
opposite the smaller arm which is c.
Law of cosines gives c^2 = a^2+b^2-2ab*cos(C).
ie., cos(C) = (a^2+b^2-c^2)/2ab.
Here, cos(C) = (157+121-36)/[2*11rt157] =
121/(11rt157) = (11/rt157) = 0.8778955729 and
C = arccos (0.8778955729) = 28.61045967°
= 28.6° to nearest tenth of a degree.
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- 1 year ago
tan(t) = 6/11
t = arctan(6/11)
t = 28.610459665965216957704244177375...