The diagonals for a parallelogram have lengths of 8 and 11. Find the area and perimeter if the diagonals create a 138 degree angle

perimeter is 42.19( ) and area is 10.5475 x 2= 21.0950( )^2

Step-by-step explanation:

138-180 =180-42 =138angle either side so the relation is 8x11 x2 and 126 makes half 4x4.5 so the extra 12 is 12/138/2 = 12.5% =6.25% of 8x11 = 0.5 +0.6875 +4x4.5=5.36+5.1875= 10.5475 x 4=42.19

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

answer:   rotate 270° clockwise about (7, 1) and reflect across the line x = 7

step-by-step explanation:

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