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IrinaK [193]
2 years ago
14

Can someone help with trig identities? (calculators are allowed)

Mathematics
1 answer:
Oksana_A [137]2 years ago
8 0

Answer:

d

Step-by-step explanation:

cosA^2 = 1 - sinA^2

subtitute 1/4 below

= 1 - (1/4)^2

= 1 - 1/16

after calculation

= - 0.9682

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A, B & C form a triangle where
andrew-mc [135]

Answer:

16.5mm to. 1 decimal place

Step-by-step explanation:

Please check attachment for diagrammatic representation of the triangle.

Since one of the angles of the triangle is 90, this means that we are dealing with a right angled triangle

To find the length of AC, we make use of pythagoras’ theorem which states that the square of the hypotenuse equals the sum of the square of the other two sides. The hypotenuse is the longest side of the triangle which we have as 17.88 mm

Mathematically therefore

17.8^2 = 6.6^2 + AC^2

AC^2 = 17.8^2 - 6.6^2

AC^2 = 283.28

AC = √(273.28)

AC = 16.53 mm

This is 16.5 to 1 decimal place

7 0
3 years ago
Write it as a product: -<img src="https://tex.z-dn.net/?f=ax%5E%7B6%7D" id="TexFormula1" title="ax^{6}" alt="ax^{6}" align="absm
IrinaK [193]

Answer:

\frac{-abx^{6}+1 }{b}

Step-by-step explanation:

4 0
3 years ago
Is it possible to divide <br> 0 by 27<br> ?
Mumz [18]

Answer:

No. Dividing by 0 is not rational, no number works.

5 0
2 years ago
Read 2 more answers
Solve. -1/2 + (3/4 x 4/9)
max2010maxim [7]
-0.16666666666 which equals -1/16.
4 0
3 years ago
I’m the triangle shown below what is the approximate value of x
Dafna1 [17]

Answer:

The answer is choice B: 22.52 units.

Step-by-step explanation:

We use the Pythagoras's theorem which says for a right triangle with sides x,y and hypotenuse z:

x^2+y^2=z^2.

In our case

z=26

y=13

So we solve for x:

x=\sqrt{z^2-y^2}=\sqrt{26^2-13^2}  =\boxed{22.52\: units.}

Which is choice B.

8 0
3 years ago
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