Actividad 1) Calcular: Sen (x+y) + Sen (x-y) 2) Calcular: Cos (x+y) - Cos (x-y) 3) Calcular: 1\2 [Cos (A+B) + Cos (A-B) 4) Si Sen x= 3/5, Sen y= 1/3, Cos x= 3/13 y Cos y= 5/13 Calcula: Sen (x+y) y Sen (x-y) 5) calcular: Sen (60°+x) +Sen (60°-x) dividido/ Cos x 6) Si tan 45°= 1 y Tan 37°=3/4. Calcular: Tan 8° y Tan 82°

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;

the correct answer is a.) bc< mn 5 stars if this you : )

step-by-step explanation:

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.