Assuming that the probability of giving birth to a boy or girl is 50% (that is equally likely to have a boy or girl), find:
1 answer:
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Answer:
Option A.
Step-by-step explanation:
It is given secθ = -
then cosθ = -
Now we know the identity
sinθ =
=
=
Now sin2θ = 2sinθcosθ
Now we put the values of cosine and sine in the formula
sin2θ = 2×(-)(
)
= -
Therefore, option A. is the answer.
