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We Know that, (a+b)2 + (a-b)2 = 2(a2 + b2) Hence, (sin A + cos A)2 + 
= 2(sin2 A + cos2 A) => (sin A + cos A)2 + = 2(1) => (sin A + cos A)2 = 2 - => (sin A + cos A)2 = 2 - = = => (sin A + cos A) =
The average weight of a class of 25 student is 60 KG. If X is student joined the class, than the average weight of whole class increases by (2X – 7)...
The average income of a group of 30 freelancers is Rs. 500. If 3 freelancers earning an average of Rs. 550 leave the group and 1 freelancer earning Rs. ...
Average of 20 numbers is 90. Average of first 8 numbers is 114 while average of last nine numbers is 40. If ninth number is 25% less than the tenth numb...
The average of ten numbers is A. If c is subtracted from each number except the tenth and (c-1) is subtracted from the tenth number, then what will be t...
The average weight of 48 students in a school is 32 kg. If two new students with weights of 'x' kg and '(x + 6)' kg join the group, the average weight o...
The average weight of a group of five persons, A, B, C, D, and E is 60 kg. If another person K joins the group then the average weight of the group is d...
The average weight of 32 employees in an office is 38 kg, while the average weight of 6 managers overseeing these employees is 62 kg. If 12 employees an...
The average price of two cars, namely 'M' and 'N' is Rs. 45,000 whereas the average price of cars 'N' and 'O' is Rs. 50,000. If the average price of car...
In a cricket match the captain of one of a team scored 27 runs more than the average runs scored by the remaining 7 batsmen of that team who batted in t...
The average of n numbers is 65. If each of 54% of the numbers is increased by 15 and each of the remaining numbers is decreased by 10, then the new aver...
