# Trigonometry

Is true equality?

**Result****Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):**

**Showing 0 comments:**

**Be the first to comment!**

#### To solve this example are needed these knowledge from mathematics:

## Next similar examples:

- Line

It is true that the lines that do not intersect are parallel? - Three unknowns

Solve the system of linear equations with three unknowns: A + B + C = 14 B - A - C = 4 2A - B + C = 0 - PIN - codes

How many five-digit PIN - code can we create using the even numbers? - Blocks

There are 9 interactive basic building blocks of an organization. How many two-blocks combinations are there? - Reference angle

Find the reference angle of each angle: - Confectionery

The village markets have 5 kinds of sweets, one weighs 31 grams. How many different ways a customer can buy 1.519 kg sweets. - Legs

Cancer has 5 pairs of legs. The insect has 6 legs. 60 animals have a total of 500 legs. How much more are cancers than insects? - Teams

How many ways can divide 16 players into two teams of 8 member? - AP - simple

Determine the first nine elements of sequence if a10 = -1 and d = 4 - Examination

The class is 21 students. How many ways can choose two to examination? - Sequence

Write the first 7 members of an arithmetic sequence: a_{1}=-3, d=6. - Chords

How many 4-tones chords (chord = at the same time sounding different tones) is possible to play within 7 tones? - Average

If the average(arithmetic mean) of three numbers x,y,z is 50. What is the average of there numbers (3x +10), (3y +10), (3z+10) ? - Three workshops

There are 2743 people working in three workshops. In the second workshop works 140 people more than in the first and in third works 4.2 times more than the second one. How many people work in each workshop? - Sequence 2

Write the first 5 members of an arithmetic sequence a_{11}=-14, d=-1 - Sequence

Write the first 6 members of these sequence: a_{1}= 5 a_{2}= 7 a_{n+2}= a_{n+1}+2 a_{n} - Theorem prove

We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?