Cos a + cos b cos ( a+ b) = 1.5 then which of the following is true ? 1] , a+ b = 0 2], a= 2b 3], a= b 4], 2a= b
![If A=[(1,2,-3),(5,0,2),(1,-1,1)],B=[(3,-1,2),(4,2,5),(2,0,3)] and C=[(4,1,2),(0,3,2),(1,-2,3)], then compute (A+B) and (B-C). Also, verify that A+(B-C)=(A+B)-C. If A=[(1,2,-3),(5,0,2),(1,-1,1)],B=[(3,-1,2),(4,2,5),(2,0,3)] and C=[(4,1,2),(0,3,2),(1,-2,3)], then compute (A+B) and (B-C). Also, verify that A+(B-C)=(A+B)-C.](https://d10lpgp6xz60nq.cloudfront.net/web-thumb/515792051_web.png)
If A=[(1,2,-3),(5,0,2),(1,-1,1)],B=[(3,-1,2),(4,2,5),(2,0,3)] and C=[(4,1,2),(0,3,2),(1,-2,3)], then compute (A+B) and (B-C). Also, verify that A+(B-C)=(A+B)-C.
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![Solvation of ions: 1: positive ion A+; 2: negative ion B-; 3: solvent... | Download Scientific Diagram Solvation of ions: 1: positive ion A+; 2: negative ion B-; 3: solvent... | Download Scientific Diagram](https://www.researchgate.net/publication/362986305/figure/fig1/AS:11431281084514759@1663218059146/Solvation-of-ions-1-positive-ion-A-2-negative-ion-B-3-solvent-molecules-4.png)
Solvation of ions: 1: positive ion A+; 2: negative ion B-; 3: solvent... | Download Scientific Diagram
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Amazon.com: USB HUB HAT B Expansion Board for Raspberry Pi 4 B/3 B+/3 A+/2 B/Zero/Zero 2 W/W/WH,PC,4 USB Ports Compatible with USB2.0/1.1 : Electronics
![Raspberry Pi 3 model B/4B/2B/B+/A+/B 4 inch LCD Display Module 480*320 Touchscreen|raspberry pi|pi api 3 - AliExpress Raspberry Pi 3 model B/4B/2B/B+/A+/B 4 inch LCD Display Module 480*320 Touchscreen|raspberry pi|pi api 3 - AliExpress](https://ae01.alicdn.com/kf/HTB14Z40MFXXXXaVXXXXq6xXFXXXH/Raspberry-Pi-3-model-B-4B-2B-B-A-B-4-inch-LCD-Display-Module-480.jpg)
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![SOLVED: 0 > Question 3 of 9 2 Points Use row operations to find the determinant of the following matrix. /1 D b+c 1 b 3+D 1 c a+ b A. abc SOLVED: 0 > Question 3 of 9 2 Points Use row operations to find the determinant of the following matrix. /1 D b+c 1 b 3+D 1 c a+ b A. abc](https://cdn.numerade.com/ask_images/6db155b04c3f43de9026d89606d4876e.jpg)