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3 years ago

Let f(x) = cos-1x. Then the domain of f(x) is [-1,1] and the range is all real numbers.

2 answers:

5 0

This is the concept of geometry, the function given by f(x)=cos^x
can be written as cos y=x
The domain if the function is [-1,1] and the range is given by [0,π] where π=180°

Furkat [3]3 years ago

4 0

Answer:

The answer is False

-Apex

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3 years ago

Find the indicated missing angle. Round to the nearest angle.

sladkih [1.3K]

Answer:

The missing angle 'x' is 22.29°.

i.e. $x\:=\:22.29^{\circ \:\:}$

Step-by-step explanation:

Let 'x' be the missing angle of the triangle.

Using the formula

tan x = opp ÷ adjacent

tan x = 30 ÷ 72

tan x = 0.41

$x=\tan ^{-1}\left(0.41\right)$

$x\:=\:22.29^{\circ \:\:}$

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4 0

3 years ago

Write each equation in function notation, then solve the function for the given value.

sergiy2304 [10]

Answer:

y = 21

Step-by-step explanation:

x = 5

y = 5 (5) - 4

y = 25 - 4

y = 21

(5 , 21)

Hope this helps!

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3 years ago