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Sagot :
Given:
Here given values are area of parallelogram is 43
AB=7 cm
BC=9 cm and ABC<90
Required:
We need to find ABC
Explanation:
We know that the opposite sides of parallelogram are same so here AB=CD and BC=AD
AB=CD=7 cm and BC=AD=9 cm
Let me draw a figure
So here similarly opposite angles are also same
means A=C and B=D and angle on the same side means A , B and C , D are supplementary means addition is 180
here we have to find B so for B
we have formula for area
Area=AB*BC*sinB
[tex]43=7*9*\sin B[/tex][tex]\sin B=\frac{43}{63}[/tex]Final Answer:
B=43.04 which is less then 90

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