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Monica [59]
2 years ago
15

If sec a = 5/4 and a is an angle in quadrant iv find the value of cos a

Mathematics
1 answer:
wariber [46]2 years ago
8 0
We know that
<span>sec a = 5/4
</span>sec(a)=1/cos(a)
then 
cos (a)=1/sec(a)
cos (a)=1/(5/4)=4/5---> is positive because the function cos is positive in IV quadrant

the answer is cos(a)=4/5
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Daniel ran 5 kilometers in 40 minutes. Andy ran 4,550 meters in 37 minutes. Who ran faster?
gtnhenbr [62]

Answer:

Daniel

Step-by-step explanation:

Daniel ran 5000/40=500=4=125 meters in 1 minutes

Andy ran 4550/37=122.9729... some less than 123 meters in second

Daniel was faster than Andy

4 0
2 years ago
Orhan'ın yaşı 16 Oğuzhan'ın yaşı 24'tür Buna göre Orhan'ın yaşının Oğuzhan'ın yaşına oranı kaçtır?
ANEK [815]

Answer:

Cevap C.

Step-by-step explanation:

Oran 16:24. Her ikisinin de en büyük ortak faktörünü buldum, 48. 48 bölü 16, 3. 48 bölü 24, 2. Yani cevap 3: 2 veya C!

Mantıklı gelmiyorsa özür dilerim, bir çevirmen kullanıyorum, ama umarım yardım etmişimdir!

5 0
3 years ago
Find values of x and y for which ABCD must be a parallelogram. The diagram is not drawn to scale.
Arturiano [62]
ANSWER
x=4, y=8

EXPLANATION

If ABCD is a parallelogram, then

line AB is parallel to line DC .

This means that,

(x + 2) \degree
and

(2x - 2) \degree
are alternating angles.

Alternate angles are congruent.

This implies that,

2x - 2 = x + 2

We group like terms to obtain,

2x - x = 2 + 2

This simplifies to,

x = 4

Also, if ABCD is a parallelogram then,

BC is parallel to AD. This means that,

5y - 8 = y + 24

We group like terms to get,

5y - y = 24 + 8

This simplifies to,

4y = 32

We divide both side by 4 to get,

y = 8
6 0
3 years ago
Read 2 more answers
What is the answer to 420 + 69 =
Gelneren [198K]

Answer:

420 + 69 = 489

Step-by-step explanation:

HOPE THIS HELPS

brainliest pls :)

8 0
3 years ago
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The print on the package of -watt General Electric soft-white light-bulbs says that these bulbs have an average life of hours. A
Naddika [18.5K]

Answer:

Hi your question is incomplete attached below is the complete question

answer : p ( X < 725 )  = 0.0116

Step-by-step explanation:

Given data:

Average life of bulbs (μ  ) = 750 hours

standard deviation (б ) = 55 hours

n ( sample size ) = 25

X = 725  

<u>Probability that the mean life of a random sample of 25 bulbs will be less than725 hours </u>

p ( X < 725 ) = p (( X - μ )/ б √n  <  725 - 750 / 55√25 )

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Hence P ( X < 725 ) = 0.0116  ( using Z-table )

3 0
2 years ago
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