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KengaRu [80]
3 years ago
7

Consider the derivation of sin(2x). A 2-column table with 3 rows. Column 1 has entries 1, 2, 3. Column 2 is labeled Step with en

tries sine (2 x) = sine (x + x), = sine (x) cosine (x) + cosine (x) sine (x), = (sine (x) cosine (x) ) squared. Where is the error?
Mathematics
1 answer:
lisabon 2012 [21]3 years ago
5 0

Answer:

D, Step 3

Step-by-step explanation:

I just did it on edge

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10.25 which is equal to letter c

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The following functions are
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8 0
3 years ago
A 15-foot pole is leaning against a tree. The bottom of the pole is 8 feet away from the bottom of the tree. Approximately how h
Karolina [17]

Poles are usually standing vertical, thus at right angle with the ground. The length of tree touching the top of pole is given by: Option D: 17 feet.

<h3>What is a right angled triangle?</h3>

A right angled triangle is a triangle having one of its angle with measure of 90 degrees.

The slant side(leaning side) of that triangle is called Hypotenuse and it is the longest side in that triangle.

<h3>What is Pythagoras Theorem?</h3>

If ABC is a triangle with AC as the hypotenuse and angle B with 90 degrees then we have:

|AC|^2 = |AB|^2 + |BC|^2

Where |AB| = length of line segment AB.

We can use the fact that the pole is standing vertical, the tree is leaning on it, so there is right angled triangle formation, and thus, we can use Pythagoras theorem.

Consider the graph attached below.

The tree is AC, The pole is AB and the distance of pole's bottom from the bottom of the tree is denoted by length of BC

We're already given that:

Pole length = |AB| = 15 feet

Distance between bottom of pole to bottom of tree = |BC| = 8 feet

The length of tree is |AC| = x feet (assume)

Then, by the Pythagoras theorem, we get:

x^2 = 15^2 + 8^2\\\\x = \sqrt{225 + 64} \text{\: (We took positive root since length is a non negative quantity)}\\\\x =\sqrt{289} = 17 \: \rm feet

Thus, length of AC = |AC| = 17 feet.

Thus,

The length of tree touching the top of pole is given by: Option D: 17 feet.

Learn more about Pythagoras theorem here:

brainly.com/question/12105522

6 0
3 years ago
WILL GIVE BRAINLIEST I ONLY HAVE 20 MINS
tamaranim1 [39]

Answer:

The answer is (D)

Adding the 5 and 3 then multiplying them by the numbers in the brackets in order to remove them from the brackets

In other words Simplifying the equation

8 0
2 years ago
I am so glad people help me on brainlyy. i still need help with this question tho
lidiya [134]

Answer:

Step-by-step explanation:

dont know sorry I am in 6 grade

5 0
3 years ago
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