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In triangle ABC, angle BAC = 60°, and BC = AB. What is the measure of angle BCA? 相关知识点: 试题来源: 解析 解析: 根据题目中给出的信息,我们需要求解角BCA的度数。 根据三角形内角和定理,三角形ABC的三个内角之和等于180度,即角BAC + 角ABC + 角BCA = 180°。 已知角BAC = 60°,并...
In a triangle ABC the angle C is three times the size of angle A, the angle B is twice the size of angle A. Then the triangle ABC A. is equilateral B. is isosceles C. has an obtuse angle D. has a right-angle E. has only acute angles 相关知识点: ...
In a triangle ABC, angle A = 60 degrees, angle B = 70 degrees. What is the measure of angle C? A. 50 degrees B. 60 degrees C. 70 degrees D. 80 degrees 相关知识点: 试题来源: 解析 A。三角形内角和是 180 度,已知角 A 和角 B 的度数,那么角 C 的度数为 180 - 60 - 70 =...
In triangle ABC, the magnitude of the internal angle gamma is equal to one-third of the angle alpha. The size of the angle beta is 80 degrees larger than the size of the gamma angle. Calculate the magnitudes of the interior angles of the triangle ABC. 相关知识点: 试题来源: 解析 ...
If the directional light isn’t quite perpendicular to the triangle surface, the illumination will be less. Mathematically, the illumination of a surface from a directional light source is equal to the cosine of the angle between the light vector and the negative surface normal. If these tw...
To find the length of CD in triangle ABC where angle A is a right angle, we can follow these steps:Step 1: Identify the triangle and its dimensions In triangle ABC: - Angle A is 90 degrees. - Length AC = 6 cm. - Length BC = 10
In {eq}\triangle {/eq} abc, a= 8, b= 9, and {eq}\angle c= 135^\circ {/eq}. What is the area of {eq}\triangle {/eq} abc? Triangle and Its Area A polygon that has 3 sides is generally known as the triangle. As the name suggests it has three...
In triangle ABC, AB=13, BC=14, and CA=15. Distinct points D, E, and F lie on segments \overline{BC}, \overline{CA} and \overline{DE} respectively, such that \overline{AD}\bot\overline{BC}, \overline{DE}\bot\overline{AC}, and \overline{AF}\bot \overline{BF} The length of ...
In triangle ABC, the angle ACB is greater than a right angle. Let D be the foot of the perpendicular from C to AB,let M be the midpoint of AB,let E be the point on AC(extended)such that EM=BM,and let F be ...