If. A2 > B2 + C2 in triangle ABC, then a > b + C is right-

incorrect.
Let △ ABC, a = 4, B = 3, C = 2
From a & sup2; > b & sup2; + C & sup2;, that is 16 > 9 + 4
It is an acute triangle, a ＜ B + C

RELATED INFORMATIONS

1. What triangle is (a-b) (B-C) (C-A) (A2 + b2-c2) = 0 △ ABC
2. Who are prime numbers in 57, 87, 89 and 49?
3. What is prime a × prime B = 57, prime a + prime B = 57
4. It is known that ABCD is four different rational numbers, and the absolute value of 1 plus a is equal to the absolute value of 1 plus B, and the absolute value of 2 minus C is equal to 2 minus D How much is a plus B plus C plus D
5. Given that ABCD is a rational number, the absolute value of a minus B is less than or equal to 9, the absolute value of C minus D is less than or equal to 16, and the absolute value of a minus B minus C plus D is equal to 25, find the absolute value of B minus a minus D minus C
6. Now there are four different integers a, B, C and D whose product ABCD = 25, then a + B + C + D =?
7. How to arrange a sequence into B1 = A1, C1 = A2, D1 = A3, E1 = A4, B2 = A5, C2 = A6, D2 = A7, E2 = A8 B1 = A1, C1 = A2, D1 = A3, E1 = A4 can be used B2 = A5, what about this? ====I don't want to use all the devices, because there are too many operations 1000 data to operate 250 times five times, is 2500 times ====The best method is as follows: Input in B1: = indirect ("a" & row() * 4-3) Enter in C1: = indirect ("a" & row() * 4-2) Input in D1: = indirect ("a" & row() * 4-1) Enter in E1: = indirect ("a" & row() * 4) Select b1, C1, D1 and E1 to fill
8. ▱ the circumference of ABCD is 36 & nbsp; cm, ab = 57bc, then the length of the longer side is () A. 15cmB. 7.5cmC. 21cmD. 10.5cm
9. As shown in the figure, ▱ in ABCD, m, N, P and Q are the points on AB, BC, CD and Da respectively, and am = BN = CP = DQ
10. AC is the diagonal of parallelogram ABCD. Prove AB = CD BC = da
11. When a, B and C are integers and satisfy A2 + B2 + C2 + 4a-8b-14c + 69 = 0, the value of a + 2b-3c is obtained
12. If M and N are prime numbers, and the positive integers K and t satisfy K + T = m, K times t = n, then the n power of M + the m power of N + the t power of K + the K power of T =?
13. ABCD multiplied by 2 equals four natural numbers of DCBA
14. If the sum of two nonzero natural numbers is prime, then the two numbers must be prime______ ．
15. 60 = () + () 2. () + () = 80 prime numbers in brackets
16. There are three prime numbers whose product is 1001. What are the three prime numbers?
17. There are three prime numbers whose product is 1001. What are the three prime numbers?
18. Given 10 ^ a = 2, 10 ^ B = 3, find 100 ^ 2a-1 / 3B
19. Given | 2a-1 | + | 3b-2 | = 0, find the value of a + B fast
20. a. B and C are three prime numbers within 100. How many different equations make a + B = C hold?