Question

the angle of a quadrilateral are in AP whose common difference is 10 degree find the angles​

Answer 1

Step-by-step explanation:

here a=X

d= -10

n=4

now

X +(X-10) +(x-20) +(x-30) =360

4X- 60. =360

4X. = 360+60

4X. = 420

X. =420

4

X. =105

therefore

angles are105°,95°,85°,75°

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