2. Calcule sen 2a, dada la condición siguiente. Sugerencia: utilice las identidades pitagóricas y la figura del plano de los
cuadrantes.
Si sen a= 4/5 y a está el cuadrante II.
Calcule sen (a/2) y cos (a/2), a partir de la información dada.
sen a = - 2/3 y se sabe que a está en el cuadrante IV.

Plz, ! the box plot below shows the total amount of time, in minutes, the students of a class surf the internet every day: a box plot is shown.part a: list two pieces of information that are provided by the graph and one piece of information that is not provided by the graph. (4 points) part b: calculate the interquartile range of the data, and explain in a sentence or two what it represents. (4 points) part c: explain what affect, if any, there will be if an outlier is present. (2 points)

Listed in the table is the percentage of students who chose each kind of juice at lunchtime. use the table to determine the measure of the central angle you would draw to represent orange juice in a circle graph

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b