3 years ago

(1+2sin acos a):sin a+cos a=?

1 answer:

6 0

Yuck, trig. I'm doing college trig at this very moment.

the top half (1+(2sinθ)cosθ)=1+sin(2θ)
because 2sinθcosθ=sin(2θ) is an identity

$\frac{1+sin2θ}{(sinθ) (cosθ)}$

Using polynomial division your answer becomes:
(csc θ)(sec θ)+2

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If the amounts of rainfall in an area over a month are 1.7", 2.2", 0.5", 0.72",

AlekseyPX

Answer:

1.244"

Step-by-step explanation:

The mean is given by dividing the sum of the given numbers by the frequency. In this case, the frequency is 5 since we're given 5 rainfall data. The sum of the respective rainfall is equivalent to 1.7"+2.2"+0.5"+0.72"+1.1"=6.22"

Now dividing the above sum by frequency yields mean as follows

$Mean=\frac {6.22}{5}=1.244"$