Find the exact value of sin22.5 (using the half angle formula)

Sin(a/2) = √(1/2(1 - cos a))
sin 22.5 = sin (45/2) = √(1/2(1 - cos 45)) = √(1/2(1 - 1/√2)) = √(1/2(√2 - 1)/√2) = √(√2/4(√2 - 1)) = √(2 - √2)/2

The correct answer is 7

The answer is 270 cars.you can do this by making a proportional relationship. for instance, 200 is the whole we are using, so on a “number line” 200 would be over 100%. now, since he sells 35% more, add 35% to 100% to get 135% on the other side of the “number line” on the bottom half, leaving the top half empty.cross multiply 200 by 135 then divide by 100 to get your answer. i hope this , if it did, , if you don’t mind, giving me brainiest! 200/100% } 200 • 135 /100 ? /135%