8 sides
the exterior angle = 180° - 135° = 45° ( exterior/ interior are supplementary )
the sum of the exterior angles of a polygon = 360°
number of sides = = 8
What is 314.16 rounded to the nearest hundredth
1 answer:
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Answer:
Step-by-step explanation:
look this solution
Answer:
see explanation
Step-by-step explanation:
Using the double angle identity for sine
sin2x = 2sinxcosx
Consider left side
cos20°cos40°cos80°
= (2sin20°cos20°)cos40°cos80°
= (2sin40°cos40°)cos80°
= (sin80°cos80° )
= (2sin80°cos80° )
= . sin160°
= . sin(180 - 20)°
= . sin20°
= = right side , thus proven
Answer:
Step-by-step explanation:
B = {p , q , r}
Number of subsets =
Her, n is the number of elements in the set.
Number of subsets = 2³ = 8