If tanx = 0.75, find the value ofi. cos2x + sin2x
2tanx
ii.
for 0° < x < 90°
C0Sx-sinx
-

Answers

Answer 1

Answer:

Answer:

i. 31/25

ii. 1/5

Step-by-step explanation:

you know that tanx = 3/4, so you can also find that sinx = 3/5 and cosx = 4/5. Then you can use the double angle identities to find cos2x and sin2x: cos^2(x) - sin^2(x) + 2sinxcosx and substitute the givens to get 31/25. Then, cosx - sinx is obviously 1/5.

Related Questions

Variable g is 8 more than variable w. Variable g is also 2 less than w. Which of the following pairs of equations best models the relationship between g and w?g = 8w g = w + 2 w = g + 8 w = g − 2 w = 8g w = g + 2 g = w + 8 g = w − 2
What is the mixed number of 4/3
Which is f(5) for the function –2x2 + 2x – 3?
Given f(x)= √4x and g(x)=1/x-4. which value is the domain of f o g? A. 4 B. 1. C. 5 D. -3
It takes Tom 1 hour to lay 30 bricks. He has to lay 180 bricks. Tom starts to lay the bricks at 9 a.m He has half an hour break at 11 a.m He has another half an hour break at 1 p.m What time should Tom finish laying the 180 bricks?

On Monday Bianca spent 4 8/9 hours studying. On Tuesday she spent another 3 5/6 hours studying. What is the combined length of time did she spend studying?

Answers

(4 8/9) + (3 5/6) = (4 16/18) + (3 15/18) = 8 13/18. Hope this helped, but I'm only in fifth grade. Sorry if I'm wrong!!!! ^^

Angle ADB Is 3 Times Larger Than Angle BDC Mangle ADB= 。 _ Mangle BDC= 。 _ D

Answers

This is your answer. Thanks!

Final answer:

Angle ADB is 3 times larger than angle BDC. By assigning a variable to BDC, an equation can be formed to find the values of both angles. BDC is 45 degrees and ADB is 135 degrees.

Explanation:

The given problem states that angle ADB is 3 times larger than angle BDC. Let's assign a variable to angle BDC, such as x degrees. Since angle ADB is 3 times larger, it would be 3x degrees. The sum of angle ADB and angle BDC is equal to 180 degrees, as they form a straight line.

Therefore, we can write the equation 3x + x = 180 to represent the sum of the angles.

Simplifying the equation, we get 4x = 180. Dividing both sides by 4, we find that x = 45 degrees. Hence, angle BDC is 45 degrees and angle ADB is 3 times larger, resulting in 3 * 45 = 135 degrees.

Learn more about angle relationships here:

brainly.com/question/31825145

#SPJ11

What is the place value of 2 in 1025

Answers

tens place value, like twenty five

Carl is boarding a plane. He has 2 checked bags of equal weight and a backpack that weighs 4kg. The total weight of Carl's baggage is 35kg. Write an equation to find the weight of the checked bags.

Answers

x=weight of one checked bag.
we can suggest this equation:

2x+4=35

Now, we solve this equation:
2x+4=35
2x=35-4
2x=31
x=31/2
x=15.5

Answer: the equation will be: 2x+4=35, and the weight of one checked bag will be 15.5 g,

Answer:

15.5

Step-by-step explanation:

2w+ 4 = 35 is the equation

15.5 is the total for w

I did this khan and this answer is correct

Hope this helps!

LC)Variable c is 9 more than variable w. Variable c is also 3 less than variable w. Which pair of equations best models the relationship between c and w? (5 points) c = w – 9
c = 4w + 3
c = w + 9
c = w – 3
w = c + 9
w = c – 3
w = c – 9
w = 4c + 3

Answers

c=w+9 and c=w-3

w=c-9 and w=c+3

These pairs of equations are best relationship models between c and w.

How to find pair of best relationship model for c and w?

We have given,

Variable c is 9 more than variable w which can be written as

c=w+9

It can also be written as :w=c-9

It is also given that,Variable c is also 3 less than variable w, which can be written as:

c=w-3

It can also be written as: w=c+3

This way our pair of relationship between c and w are:

c=w+9 and c=w-3

w=c-9 and w=c+3

Learn more about linear equations :

brainly.com/question/12974594

#SPJ2

Variable C is 9 more than variable w.

C = w + 9
w = C - 9

Variable C is 3 less than variable W.

C = w - 3
w = C + 3

HELP NEEDED, GIVING BRAINLIEST!!Which of the following are the vertices of the image of the figure below under the translation (x , y) ---> (x + 4, y - 2)? SELECT ALL THAT APPLY

A. (- 1, 2)
B. (- 9, 6)
C. (- 2, 7)
D. (6, 3)
E. (1, - 4)
F. (- 7, 0)