In a triangle ABC, the measure of angle B is 4 times the measure of angle A, and the measure of angle C is 3°less than 5 times the measure of angle A.(5x-3) Find the measure of the angles X4x AR The measure of angle A is (Simplify your answer. Type an integer or a ...
因为△ABC为锐角三角形,且 $$ \angle A = \frac { \pi } { 3 } $$,所以$$\left\{ \begin{matrix} \angle B \in ( 0 , \frac { \pi } { 2 } ) \\ \angle C \in ( 0 , \frac { \pi } { 2 } ) \end{matrix} \right.$$即$$\left\{ \begin{matrix} \angle B \...
An isosceles triangle has a 96-degree angle. What are the measures of the other 2 angles? Isosceles triangle,two angles have the same measure. Determine the measure of the third angle in an isosceles triangle,if the third angle is 10 more than one...
Given triangle {eq}ABC {/eq}, which equation could be used to find the measure of {eq}\angle B {/eq}? {eq} 1. \cos m\angle B=\dfrac{2\sqrt 5}{5}\\ 2. \sin m\angle B=\sqrt 5 {/eq} Sine and Cosine Ratios: Sine and cosine are two primary ratios ...
A2. Triangle ABC has a right angle at B. 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...
【问题情境】(1)射影定理:如图1,在{\rm Rt}\triangle ABC中,\angle ACB= 90\degree,如果CD\bot AB,垂足为D,那么有①
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Answer to: In triangle ABC, angle C is a right angle. Find the remaining sides and angles. Round your answer to the nearest tenth. angle B = 52...
Answer to: Consider the triangle shown in the diagram below. Suppose that m angle A = 83 degrees, m angle C = 34 degrees, and c = 41.8. What is the...
如图,在$\triangle ABC$中,在$AB$上存在一点$D$,使得$\angle ACD=\angle B$,角平分线$AE$交$CD$于点$F.\triangl