1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nexus9112 [7]
3 years ago
8

I'm being timed pls help will pick brainliest

Mathematics
1 answer:
stiv31 [10]3 years ago
7 0

Answer:

Cos 0° = 6.42 = V1

6th quadrant.

So, cos x = 0 implies x = (2n + 1)π/2 , where n takes the value of any integer. For a triangle, ABC having the sides a, b, and c opposite the angles A, B, and C, the cosine law is defined. In the same way, we can derive other values of cos degrees like 30°, 45°, 60°, 90°, 180°, 270°and 360

Step-by-step explanation:

if sin a= 3/4 then a = 50

if sin = 4/5 then a = 60

if sin = 2/3 then a = 40

But we can perfect this

if sin = 4/5 then a = 57   as 4/5 = 0.83

We want 0.8 = 4/5

if sin = 4/5 then a = 54 as 4/5 = 0.809

if sin = 4/5 then a = 53.5 as 4/5 = 0.80385

Now for cos

It is much easier than it initially appears. Remember the definition of SINE:

SINΘ = opp             In your case, that means the opposite is 4/5 = 0.80385 (yes, ignore the sign for now) and the hypotenuse is 11.48910018

           hyp             Please draw that triangle right now, because it will help you a lot at the end.

 53.50 degree           Remember to place the angle in the appropriate spot.

Now, use the Pythagorean Theorem to find the missing side (easy, right? It's 9.534) and place it in the adjacent position.

You can easily find all of the trig functions now!

Simply remember that:

COSΘ = Adj                                  with SEC the reciprocal of this one

            Hyp

TANΘ = Opp                                  COT the reciprocal of TAN and, if anyone asks, CSC coming from SIN.

            Adj

I told you to ignore the signs, but now we can't anymore. Remember the four quadrants and the memory trick:

A                        -- ALL are positive

Smart                 -- SIN and CSC are positive

Trig                    -- TAN & COT are positive

Class                  -- COS and SEC are positive.

Since your SIN was negative, it must be in III or 6, and COS is positive in I and 6 So we're in quadrant 6 then!

Only your COS and SEC will be positive, the rest negative

You might be interested in
I NEED HELP WITH B PLEASE!! WILL GIVE BRAINLY
Sladkaya [172]

Answer:

AB = 30 & BD = 16

Step-by-step explanation:

Multiply all sides by two

7 0
3 years ago
Johnny ran 3/4 of an hour and Angie ran 2/3 of an hour how much more did Johnny run
yawa3891 [41]
3/4 = 9/12
2/3 = 8/12

9/12 - 8/12 = 1/12

So Johnny ran for 1/12 of an hour longer than Angie.
3 0
3 years ago
Read 2 more answers
Which statement is true about a trend line?
Vladimir [108]
The answer is a if it’s not a I’m sorry but I love you
8 0
3 years ago
Read 2 more answers
Gibson Instruments is planning to produce and market a new line of guitars. The current market price for similar guitars is $1,2
m_a_m_a [10]
We are given the current market price that is <span>$1,200 and we are asked in the problem to compute the target cost if one wishes to gain a 30% profit. In this case, we have to minimize the cost to achieve the profit desired. Then,

1.3 y = 1200
where y is the target cost
y = $923.08
</span>
5 0
3 years ago
Verify that the function satisfies the three hypotheses of Rolle’s Theorem on the given interval. Then find all numbers c that s
Veseljchak [2.6K]

Answer:

Step-by-step explanation:

the answer is 12 or 9

4 0
3 years ago
Other questions:
  • Yvette uses 6 grams of tea leaves to make 24 fluid ounces of tea. last week she made 288 fluid ounces of tea. how many grams of
    14·2 answers
  • BY using eight eights  and addition only can you make 1000?????/
    8·1 answer
  • What is the value of X? I already know the answer I just wanted to see if this app works. Lol
    8·1 answer
  • I need assistance solving these questions using Cramers' Rule (which I am frankly terrible at) and need these to finish my homew
    15·2 answers
  • The ratio of men to women working for a company is 3 to 5 . if there are 208 employees total, how many women work for the compan
    5·1 answer
  • A few years ago, the Colorado Rockies played 160 games and won 64. for every two games they won, how many games did they lose?
    7·2 answers
  • F(x) = 3x + 2 and g(x) = x + 5 g[f(x)] =
    5·2 answers
  • Employees from Company A and Company B both receive annual bonuses. What information would you need to test the claim that the d
    12·1 answer
  • Grandma makes chocolate chip cookies in batch of 100, and you choose one cookie at random. How many chips should she put in the
    13·1 answer
  • Solve for x. round to nearest hundredth. PLS HELPP. will award brainliest
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!