Can someone please help me

Mathematics

2 answers:

ahrayia [7]3 years ago

7 0

The answer is A,B and E

True [87]3 years ago

3 0

Answer: A, B, E

Step-by-step explanation:

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Sin A tan A/ 1 - cos A = 1+ sec A

aalyn [17]

$\text{L.H.S}\\\\=\dfrac{\sin A \tan A}{1- \cos A}\\\\\\=\dfrac{\sin A \cdot \tfrac{\sin A}{\cos A} }{ 1- \cos A}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~;\left[\tan A = \dfrac{\sin A }{\cos A}\right]\\\\\\=\dfrac{\tfrac{\sin^2 A}{ \cos A}}{1- \cos A}\\\\\\=\dfrac{\sin^2 A}{\cos A(1-\cos A)}\\\\\\=\dfrac{1-\cos^2 A}{\cos A( 1- \cos A)}~~~~~~~~~~~~~~~~~~~~~~~~;[\sin^2 A + \cos^2 A = 1]\\\\\\$

$=\dfrac{(1+ \cos A)(1 - \cos A)}{\cos A(1 - \cos A)}\\\\\\=\dfrac{1+ \cos A}{ \cos A}\\\\\\=\dfrac{1}{\cos A} + \dfrac{\cos A}{ \cos A}\\\\\\=\sec A + 1 \\\\\\=1+ \sec A\\\\\\=\text{R.H.S}\\\\\text{Proved.}$

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2 years ago

What is 32% in fraction form

AleksandrR [38]

8/25 i hope this helpeddddddd

3 0

3 years ago

Read 2 more answers

How can you tell whether a counting problem is a permutation or a combination problem? Give a real world example if possible

IrinaK [193]

Permutation problems are for lists where order matters where as combinations are for groups where order does not matter

Step-by-step explanation:

See permutation as the number of arrangements or orderings that can be identified from a fixed group.Here every detail about the group is important.

For example you have five teachers and you want to determine how many ways they can sit in five chairs. You notice that the number in this group is fixed, 5, and you want to know the number of ways you can arrange the teachers in five chairs.

Combination will come in when you want to determine the number of groups you can form from a given large number of individuals.

For example, there are seven pilots who are trying out to be part of a three-person in space flight team.How many different flight teams can be formed?..Here the word choose has been used to mean selecting from a group.The order of picking the three pilots from the 7 pilots does not matter. You have certain number of persons and you want to know how many arrangements are present for all of them.

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Permutations and Combinations : brainly.com/question/3374511

Keyword : counting, permutation, combination

#LearnwithBrainly

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3 years ago

Can any one answer this question 13-5/6 pls help me

Agata [3.3K]

Answer: 13-5/6 is 12 and 1/6

Step-by-step explanation:

Mark me as brainliest if this helps!

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