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gavmur [86]
3 years ago
10

Thirty times the square of a non-zero number is equal to 8 times the number. What is the number?

Mathematics
1 answer:
astra-53 [7]3 years ago
4 0
Hello here is a solution :

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F(x)=Tan^-1 (1)<br><br> PLEASE ANSWER! WILL GIVE BRAINLIEST
notka56 [123]

Answer:

−π

----

4

Step-by-step explanation:

Alright, archtan /

tan

−

1

(

x

)

is the inverse of tangent. Tan is

sin

cos

. Like the inverse of sin, the inverse of tan is also restricted to quadrants 1 and 4.

Knowing this we are solving for the inverse of tan -1. We are basically being asked the question what angle/radian does tan(-1) equal. Using the unit circle we can see that tan(1)= pi/4.

Since the "Odds and Evens Identity" states that tan(-x) = -tan(x). Tan(-1)= -pi/4.

Knowing that tan is negative in quadrants 2 and 4. the answer is in either of those two quadrants. BUT!!! since inverse of tan is restricted to quadrants 1 and 4 we are left with the only answer -pi/4.

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hodyreva [135]

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Because the sum of the interior angles of a triangle is 180,

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Question 2 of 10
artcher [175]

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D

Step-by-step explanation:

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