an astronomer wishes to measure on a photograph the distance between the image of a certain star and three star other star image s nearby, if 8 images are nearby how many choices of the three stars does he have?
1 answer:
The astronomer has to choose 3 star images out of 8.This is a problem of combinations. This can be expressed as 8C3 i.e. combination of 8 objects taken 3 at a time.
This means, if 8 images are nearby the astronomer will have 56 choices <span>
of the three stars. </span>
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Step-by-step explanation:
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angle Y= 60 degrees
Step-by-step explanation:
angle S + angle Y = 90 degrees because they are complementary
Y = 90 - S
angle S = 4(Y)-210
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S = 4(90 - S) - 210
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