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kifflom [539]
3 years ago
14

Angles α and β are the two acute angles in a right triangle. Use the relationship between sine and cosine to find the value of β

if β < α. sin(7x − 15) = cos(3x + 5)
Mathematics
1 answer:
V125BC [204]3 years ago
6 0
We know that
in a right triangle
if sin A= cos B
then
angle A and angle B are complementary angles
so A+B=90

therefore
(7x-15)+(3x+5)=90-----> 10x-10=90----> 10x=100----> x=10°
so
7x-15------> 7*10-15----> 55°
3x+5------> 3*10+5----> 35°

we know that
<span>β < α
therefore

the answer is
</span>β =35°

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A: 40 because supplements add up to 180
B: 54 because complements add up to 90
6 0
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What is the vertex of this equation y = -x^2+ 3
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4 0
3 years ago
Jay is letting her bread dough rise. After three hours, her bread dough is \dfrac{11}{5} 5 11 ​ start fraction, 11, divided by,
timama [110]

Answer:

Jay's bread size is 220% of the original size.

Step-by-step explanation:

The question is incomplete.

The complete question is as follows.

Jay is letting her bread rise. After 3 hours,her bread is at 11/5 of its original size. What percent of its original size is jays bread dough?

Solution:

Let the original bread size be = 100 units

After 3 hours the bread rises = \frac{11}{5} of the original size

New size of bread =  \frac{11}{5}\times 100=220 units

Percent of original size the new bread is

⇒ \frac{New\ bread\ size}{Original\ bread\ size}\times 100

⇒ \frac{220}{100}\times100

⇒ 220\%

6 0
3 years ago
Which of the following could be the lengths of the sides of a 45°-45°-90° triangle
seraphim [82]
45degrees because angles can not be negative
8 0
3 years ago
Read 2 more answers
Suma de fraccion 1/5 + 5/8​
lbvjy [14]

Answer:

33/40

Step-by-step explanation:

1/5x8= 8/40

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add them

reduce answer:

33/40

3 0
2 years ago
Read 2 more answers
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