1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dedylja [7]
2 years ago
9

Help, I don’t know what I’m doing Trigonometry

Mathematics
2 answers:
Gnom [1K]2 years ago
8 0

The answer is \boxed {\frac{1}{2\sqrt{3}}}

The needed trigonometric values :

  • The value of cot 60° = 1/√3
  • The value of cos 60° = 1/2

Hence, the value of the expression is :

  • cot 60° × cos 60°
  • 1/√3 × 1/2
  • 1/2√3
spin [16.1K]2 years ago
5 0

Answer:

\frac{\sqrt{3} }{6}

Step-by-step explanation:

using the 30- 60- 90 triangle for exact values , then

tan60° = \sqrt{3} , and

cot60° = \frac{1}{tan60} = \frac{1}{\sqrt{3} }

cos60° = \frac{1}{2}

cot60° cos60°

= \frac{1}{\sqrt{3} } × \frac{1}{2}

= \frac{1}{2\sqrt{3} } ← rationalise the denominator by multiplying by \frac{\sqrt{3} }{\sqrt{3} }

= \frac{1}{2\sqrt{3} } × \frac{\sqrt{3} }{\sqrt{3} }

= \frac{\sqrt{3} }{6}

You might be interested in
Alicia's MP3 player contains 1,260 song. Given that 35% of the songs are rock songs and 20% of the songs are rap songs, how many
schepotkina [342]
1. 567
2. 33
3. 85%; $17
4. they have 4 pages left
5. (-5,2)
8 0
3 years ago
Can anyone please help me on my corrections please!
Wewaii [24]
A) the length on the top is 2ft. You were supposed to subtract 11ft from 9ft. The length on the bottom is 17. You get that by adding 5ft and 12ft
b) then you add up all the lengths together.
2+5+12+11+9+17= 56ft
7 0
3 years ago
The following steps are used to rewrite the polynomial expression (x+2y)(x-5y)
neonofarm [45]
(x+2y)(x-5y)
do foil method:
x^2-5xy+2xy-10y^2
simplify x^2-3xy-10y^2,
so d is correct.
7 0
2 years ago
Read 2 more answers
John borrowed $ from bank for 3 years at a rate of 10%
garik1379 [7]
<h3>Given:</h3>
  • P= $12500
  • R= 10%
  • T= 3 years
<h3>Note that:</h3>
  • P= Principal amount
  • R= Rate of interest
  • T= Time period
<h3>To find:</h3>
  • The simple interest
  • The total amount paid
<h3>Solution:</h3>

\large\boxed{Formula: I= \frac{PRT}{100}}

First, we'll have to multiply, principal amount (12500), rate (10) and time period (3).

12500×10×3

=375000

Now, we'll have to divide the amount (375000) by 100.

\frac{375000}{100}

<em>I=$3750</em>

Now, we can find the total amount paid.

\large\boxed{A=SI+P}

Let's substitute according to the formula.

A=3750+12500

<em>A=$16250</em>

<u>Therefore</u><u>,</u><u> </u><u>simple</u><u> </u><u>interest</u><u> </u><u>is</u><u> </u><u>$</u><u>3</u><u>7</u><u>5</u><u>0</u><u> </u><u>and</u><u> </u><u>$</u><u>1</u><u>6</u><u>2</u><u>5</u><u>0</u><u> </u><u>was</u><u> </u><u>paid</u><u> </u><u>in</u><u> </u><u>total</u><u>.</u>

5 0
1 year ago
I need help with this fast
bonufazy [111]
The first one is fraction and the second one is volume.
7 0
2 years ago
Other questions:
  • The perimeter of a rectangle is 24 meters. If the length of the rectangle is 8 meters, what is the width (in meters)?
    8·2 answers
  • A right triangle is shown below.
    8·2 answers
  • A serving size of ice cream is 1cup.If a container of ice cream is 1 1/2cups how many servings are in a container.?
    5·1 answer
  • The length and width of a rectangular room are measured to be 3.955±0.005m. Calculate the area of the room and its uncertainty i
    8·1 answer
  • if you use synthetic division for this polynomial: 3x^5-12x^4+12x^3+30x^2-39x-42. What would the answer be?
    15·1 answer
  • Please help!!!
    8·1 answer
  • Is there a proportional relationship between x and y? Explain.
    11·1 answer
  • Please help me- please-
    6·2 answers
  • What is the scale factor from figure A to figure B?
    6·2 answers
  • lov Page No. Date : 1 era Find the L.C.M of the following expressions." 24a³-81b³, 32a^5 + 72a³b² + 162 ab^4​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!