There are128 pens full box. how many pens are in 7 box’s

896

Step-by-step explanation:

.There are 128 pens in 1 full box. Multiply 128 with 7 (as you are trying to find the total for 7 boxes).

128 x 7 = 896

There is a total of 896 pens in 7 box's

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hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2