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 ...
In triangle ABC, angle$$ A B C = 3 0 ^ { \cir c } $$$ B C = 6 c m $$n. Calculate the area of the triangle. → Section 6.3 相关知识点: 试题来源: 解析 area of triangle ABC=18$$ c m ^ { 2 } $$ 反馈 收藏
In a triangle ABC,A−B=120∘andR=8r,then the value of cos C is View Solution In a triangle ABC, ifa=2,b=3andc=4, thencosAis equal to View Solution In triangle ABC, let∠C=π/2. If r is the inradius and R is circumradius of the triangle, then2(r+R)is equal to ...
Answer to: In triangle ABC, angle B is a right angle and the measure of angle A is 40 degrees. Given that AC = 15, what is AB to the nearest tenth?...
In a triangleABC, A=30^(@), B=60^(@) . Find the other angle C 01:34 (1)/(cos 80^(@)) - (sqrt(3))/(sin 80^(@)) = 03:37 If cos 28^(@) + sin 28^(@) = k^(3), then cos 17^(@) is equal to 02:23 The maximum value of 4 sin^(2) x + 3 cos^(2) x ...
让半圆的中心为,设直线与半圆之间的切点为.角在三角形和中很常见.通过切线性质,角一定是度.因为三角形 and 是直角三角形并且有一条共同边,相似于.三角形的斜边是,其中是圆的半径.可以看到,三角形最短的边是.因为∽,我们有,解得.故选.让上的切点为,记,以一点的幂,解得.故选.We can reflect triangle ...
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 decima...
In a triangle ABC, b=√3,c=1 and ∠A=30∘, then the largest angle of the triangle is : A60∘ B135∘ C90∘ D120∘Submit In a triangle ABC, b=√3,c=1 and ∠A=30∘, then the largest angle of the triangle is : A60∘ B135∘ C90∘ D120∘Submit If the two ang...
Answer to: In a triangle ABC, angle B is three times angle A and angle C is 5 degrees less than 6 times angle A. Find the angles A, B and C. By...
In and AC =4, then find AB. View Solution In triangle ABC, angle B is right angled,AC=2andA(2,2),B(1,3)then the length of the median AD is View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7, Class 8, Class 9,...