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qwelly [4]
3 years ago
12

If tan 2A = cot (A -18°), where 2A is an acute angle, find the value of A.​

Mathematics
2 answers:
Reptile [31]3 years ago
7 0

answer will be -24

A=-24

Neporo4naja [7]3 years ago
4 0

Answer:

A = 36

Step-by-step explanation:

Using the cofunction identity

tan(90 - x) = cotx

Given

tan2A = cot(A - 18) , then

90 - 2A = A - 18 ( add 2A to both sides )

90 = 3A - 18 ( add 18 to both sides )

108 = 3A ( divide both sides by 3 )

36 = A

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The sum of two numbers is –40. One number
sasho [114]

Answer:

-27 + -13 = -40

Step-by-step explanation:

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2 years ago
Dominic runs a farm stand that sells peaches and grapes. Yesterday Dominic sold 34 pounds of peaches and 45 pounds of grapes for
scoray [572]

Answer:

34x + 45y = 192.25

47x + 16y = 208

Step-by-step explanation:

Let x stand for peaches.

Let y stand for grapes.

Since we know that yesterday he sold 35 pounds of peaches ( x ) and 45 pounds of grapes ( y ) for $192.25, we can create an equation to represent this using two variables; peaches and grapes.

We can do the same thing with the amount of peaches and grapes he sold today. Once we make this equation, we will have two equations to make the system of equations to solve for x and y.

6 0
3 years ago
I am a three digit number. I am number between 350 and 400. All my digits are different and they are all odd. The sum of my last
konstantin123 [22]

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397

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4 0
3 years ago
Read 2 more answers
Triangle PQR lies in the xy-plane, and the coordinates of vertex Q are (2, –3). Triangle PQR is rotated 180° clockwise about the
trasher [3.6K]

Answer:

(2,3)

Step-by-step explanation:

We are given that triangle PQR lies in the xy-plane, and coordinates of Q are (2,-3).

Triangle PQR is rotated 180 degrees clockwise about the origin and then reflected across the y-axis to produce triangle P'Q'R',

We have to find the coordinates of Q'.

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The coordinates (2,-3) change into (-2,3) after 180 degree clockwise rotation about origin.

Reflect across y- axis the transformation rule

(x,y)\rightarrow (-x,y)

Therefore, when reflect across y- axis then the coordinates (-2,3) change into (2,3).

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5 0
3 years ago
A jar contains 3 pennies, 5 nickels, 4 dimes, and 6 quarters. of a coin is selected at random, what is the probability of select
Artemon [7]
Hey there! :)

There are 3 pennies
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Your answer is 1/6 or 0.17

Hope this helps :)
3 0
3 years ago
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