Using a trigonometric identity, the cosine of the angle is given as follows:
<h3>What is the trigonometric identity that relates the sine and the cosine of an angle?</h3>
It is given by:
In this problem, the sine is:
Then:
On quadrant I, the cosine is positive, hence:
More can be learned about trigonometric identities at brainly.com/question/24496175
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<span>A random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is randomly selected from the distribution, determine two values of which the smallest has 25% of the values below it and the largest has 25% of the values above it.</span>
Answer:
the isn't enough information to answer
Answer:
45.6
Step-by-step explanation:
IF x is theta
arccos(7/10)
*make sure your calculator is in degree mode
x= 45.57
Answer:
0.989
Step-by-step explanation:
The probability of buying a movie ticket with a popcorn coupon is p = 0.608, so the probability of buying a movie ticket without a popcorn coupon is q = 1 - 0.608 = 0.392.
Find the following probabilities;
- the probability that 0 tickets have popcorn coupons
- the probability that exactly one ticket has a popcorn coupon
- the probability that ecatly 2 tickets have a popcorn coupons
Hence, the probability that 3 or more of the tickets have popcorn coupons is