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laila [671]
2 years ago
14

One of two complementary angles is 4 degrees more than the other. Find the angles. (Recall that complementary angles are angles

whose sum is 90 degrees.) Which of the following equations can not be used to solve the problem if x represents one of the angles?
A. 2x - 4 = 90
B. 2x + 4 = 90
C. x + 4 = 90
Mathematics
1 answer:
ANTONII [103]2 years ago
3 0
Complimentary angles add up 90°
let one of the angles be x, the 2nd angle will be (x+4)
thus the total sum will be:
x+(x+4)=90
2x+4=90
thus the right equation is:
<span>B. 2x + 4 = 90</span>
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Answer:

The answer on A P E X is bal(132)

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2 years ago
Find the exact value by using a half-angle identity. sin(5pi/12)
anzhelika [568]

Find <span>tan<span>(<span><span>5π</span>12</span>)</span></span> and sin ((5pi)/12)
Answer: <span>±<span>(2±<span>√3</span>)</span>and±<span><span>√<span>2+<span>√3</span></span></span>2</span></span>

Explanation:

Call tan ((5pi/12) = t. 
Use trig identity: <span><span>tan2</span>a=<span><span>2<span>tana</span></span><span>1−<span><span>tan2</span>a</span></span></span></span>
<span><span>tan<span>(<span><span>10π</span>12</span>)</span></span>=<span>tan<span>(<span><span>5π</span>6</span>)</span></span>=−<span>1<span>√3</span></span>=<span><span>2t</span><span>1−<span>t2</span></span></span></span>
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<span>D=<span>d2</span>=<span>b2</span>−4ac=12+4=16</span>--> <span>d=±4</span>

<span>t=<span>tan<span>(<span><span>5π</span>12</span>)</span></span>=<span><span>2<span>√3</span></span>2</span>±<span>42</span>=2±<span>√3</span></span>

Call <span><span>sin<span>(<span><span>5π</span>12</span>)</span></span>=<span>siny</span></span>
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<span><span><span>sin2</span>y</span>=<span><span>2+<span>√3</span></span>4</span></span>
<span><span>siny</span>=<span>sin<span>(<span><span>5π</span>12</span>)</span></span>=±<span><span><span>√<span>2+<span>√3</span></span></span>2</span></span></span>

5 0
3 years ago
X^2/3 can be written as
Nonamiya [84]
X to the power of two thirds <span />
5 0
3 years ago
Read 2 more answers
Need help ASAP, I am really confused!
guajiro [1.7K]

x=2 and y = 6 for your awnser hope it helped

4 0
3 years ago
WHAT IS THE ANSWER??? HELP
antoniya [11.8K]

Answer:

C

Step-by-step explanation:

The graph has a  x - axis of amount of scarves in intervals of 1 and a y - axis of hours in intervals of 20

Using this information we can see that in the ordered pair, 1 represents x and 16 represents y, which means that the scarves ar 1 and the hours are 16 in the ordered pair

C makes the most logical sense because there is nothing about centimeters in the graph and the scarves are not in the y, but rather in the x

Vote Brainliest, Thx:)

6 0
3 years ago
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