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Hunter-Best [27]
3 years ago
10

If cos θ = -2/5 and tan θ > 0, what is the value of sin θ? Answer Choices: a) the negative square root of 21 b) the negative

square root of 21 over 5 c) the square root of 21 over 5 d) the square root of 21 over 2
Mathematics
1 answer:
padilas [110]3 years ago
5 0

Answer:

I think it is A

Step-by-step

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Dennis_Churaev [7]
Let's say you want to compute the probability \mathbb P(a\le X\le b) where X converges in distribution to Y, and Y follows a normal distribution. The normal approximation (without the continuity correction) basically involves choosing Y such that its mean and variance are the same as those for X.

Example: If X is binomially distributed with n=100 and p=0.1, then X has mean np=10 and variance np(1-p)=9. So you can approximate a probability in terms of X with a probability in terms of Y:

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3 years ago
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