【题目】专项单词汇总:角angle 直角right angle 直角三角形right triangle$$ 1 ) I n \triangle A B C , A B = B C = 2 9 , a n d A C = 4 2 . W h a t $$the are a of △ABC? A. 100 B. 420 C. 500 D. 609 E. 701 ...
5A0B CxM x In the diagram, triangle AB C is right-angled at C and M is the mid-point of BC. It is given that angleABC=1/3πr adians and angle BAM = 0 radians. Denoting the lengths of BM and M C by x,(i) find AM in terms of x,[3] (i) showthatθ=1/6π-tan^...
right angle at C if AC=5 cm and BC=12 cm then area of triangle ABC is A 15cm2 B 30cm2 C 45cm2 D 60cm2 वीडियो समाधानलिखित उत्तरVerified by Experts The correct Answer is:B Show More ...
Answer Step by step video & image solution for In a triangle A B C , right angled at B , then r=(A B+B C-A C)/2 b. r=(A B+A C-B C)/2 c. r=(A B+B C+A C)/2 d. R=(s-r)/2 by Maths experts to help you in doubts & scoring excellent marks in Class 11 exam...
《源自拉丁文“有三个角 (angle) ”的意思》可数名词 1 三角形 a right [an acute-, an obtuse-] angled ~直 [锐,钝] 角三角形 a plane [spherical] ~平面 [球面] 三角形 2 a. 三角形的东西 a ~ of land 三角形的土地 the red ~红色三角形 (Y.M.C.A. 的标志)b. (美)三角板...
在\triangle ABC中,命题:①若\angle B=\angle C-\angle A,则\triangle ABC是直角三角形.②若{{a}^{2}}=\left( b c \right)\left( b-c \right),则\triangle ABC是直角三角形.③若\angle A:\angle B:\angle C=3:4:5,则\triangle ABC是直角三角形.④若a:b:c=5:4:3,则\triangle ABC是直...
AC is extended to D so that C D = C B. The bisector of angle A meets B D at E. Prove that∠AEB =45°.BE ED 相关知识点: 试题来源: 解析 SolutionSince AE bisects Since CB=CD, ABCD is isosceles so y = In AABD, by the sum of interior angles of a triangle,2x +(90+3)+...
Related to right-angled triangle:hypotenuse n (Mathematics) a triangle one angle of which is a right angle. US and Canadian name:right triangle Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009...
Step by step video & image solution for In triangle A B C is right-angled at B. Given that A B=9cm ,\ A C=15 cm calculate B C. by Maths experts to help you in doubts & scoring excellent marks in Class 9 exams.Updated on:21/07/2023Class...
<p>To find the length of CD in triangle ABC where angle A is a right angle, we can follow these steps:</p><p><strong>Step 1: Identify the triangle and its dimensions</strong> In triangle ABC: - Angle A is 90 degrees. - Length AC = 6 cm. - Length BC = 10