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ozzi
3 years ago
11

Prove cosxtanx = sinx

Mathematics
1 answer:
finlep [7]3 years ago
4 0
Cos(x)tan(x)

Transform the expression by using the formula for tan theta:
tan(t)= sin(t)/cos(t)

cos(x)= sin(x)/cos(x)

Cancel out the cos(x) since it’s on both sides

Final answer : sin(x)

cos(x)tan(x) is equal to sin(x)
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Use rectangle ABCD and the given information to solve each problem.
solong [7]

Problem 1

<h3>Answers:</h3><h3>angle 6 = 50</h3><h3>angle 7 = 50</h3><h3>angle 8 = 40</h3>

--------------------

Work Shown:

point E = intersection point of diagonals.

x = measure of angle 6

y = measure of angle 8

angle 7 is also x because triangle AED is isosceles (AE = ED)

Focus on triangle AED, the three angles A, E, D add to 180

A+E+D = 180

x+80+x = 180

2x+80 = 180

2x = 180-80

2x = 100

x = 100/2

x = 50

So both angles 6 and 7 are 50 degrees.

Turn to angle 8. This is adjacent to angle 7. The two angles form a 90 degree angle at point A. This is because a rectangle has 4 right angles.

(angle7)+(angle8) = 90

50+y = 90

y = 90-50

y = 40

angle 8 = 40 degrees

=================================================

Problem 2

<h3>Answers:</h3><h3>angle 2 = 61</h3><h3>angle 3 = 61</h3>

--------------------

Work Shown:

Angle 5 is 29 degrees (given). So is angle 4 because these are the base angles of isosceles triangle DEC (segment DE = segment EC)

angle 3 and angle 4 form a 90 degree angle

x = measure of angle 3

(angle 3)+(angle 4) = 90

x+29 = 90

x = 90-29

x = 61

Angle 2 is congruent to angle 3 since triangle BEC is isosceles (BE = EC), so both angle 2 and angle 3 are 61 degrees each.

4 0
4 years ago
If AB = 18, BC = 10, and CA = 13, list the angles of mc084-1.jpg in order from smallest to largest.
a_sh-v [17]
The rule says that:

each small angle has a small side

then the angle in front of BC is the smallest

in front of CA is the middle 

in front of AB is the largest

I hope this helped and Good luck

thank you


4 0
3 years ago
Read 2 more answers
Determine whether the function ƒ(x) = x4(x2 − 1) is even, odd or neither.
Scrat [10]
F(x) = x4(x2 - 1)
f(-x) = (-x)4((-x)2 - 1)
f(-x) = x4(x2 - 1)
from above explanation it is clear that the function is even.
7 0
4 years ago
Bessy has 9 times as much money as Bob, but when each earns $4, Bessy will have 5 times as much money as Bob. How much does each
jeyben [28]
Let x=bob’s original amount of money
Let 9x=Bessy’s original amount of money

9x+4=5(x+4)
9x+4=5x+20
4x=16
x=4

9(4)=36

Bob had $4 before earning $4 and Bessy had $36 before earning $4
6 0
3 years ago
What is scatter plots
Mumz [18]

Answer: When the data given is spread across the graph at random in no certain order

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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