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
gtnhenbr [62]
3 years ago
9

Select all of the given trigonometric equations that are true statements. sin(180°) = cos(0°) cos(74°) = sin(16°) sin(20°) = cos

(70°) sin(A°) = cos(90° - A°) sin(A°) = cos(180° - A°) cos(140°) = sin(40°)
Mathematics
1 answer:
lara [203]3 years ago
3 0

Answer:

Cos 74°= Sin 16°

Sin 20°= Cos 70°

Sin A°=Cos (90°- A°)

Step-by-step explanation:

This is because the three pairs are complementary i.e they add up to 90° and in trigonometric ratios, complementary ratios are equal.

You might be interested in
Mr. Cipalla bought 5 pounds of clay for an art project. He paid $35.35 for clay. What is the unit price per pound of the clay he
Marrrta [24]

Answer:

$7.07

Step-by-step explanation:

35.35/5=7.07

3 0
2 years ago
Last summer, Betty earned $4200 by painting houses. She invested
Musya8 [376]

x*(1.035) + (4,200-x)*(1.045) = 4,374.00

1.035x + 4,389.00 -1.045x = 4,374.00

15.00  = .01x

x = 1,500  so x (1,500) invested at 3.5% and  

(4,200 - 1,500) (or 2,700) invested at 4.5%

3 0
3 years ago
Work out the value of each expression, when r= 2.5 and t = 6.
Usimov [2.4K]

Answer:

a)  4(t - r) = 4(6 - 2.5) = 4 x 3.5 = 14

b)  4t - r = (4 x 6) - 2.5 = 24 - 2.5 = 21.5

c)  2(3t - 10) = 2(3 x 6 - 10) = 2(18 - 10) = 2 x 8 = 16

d)  (t - 2)² = (6 - 2)² = 4² = 4 x 4 = 16

e) cannot decipher the equation

f)  6r + t = 6 x 2.5 + 6 = 15 + 6 = 21

8 0
2 years ago
Read 2 more answers
Can someone please help me with this page
Oduvanchick [21]
Can you possibly take a clearer picture? Maybe I can help you with that.
7 0
3 years ago
Can someone help me with 1 2 and 3 please
3241004551 [841]

Answer:

1. vertical angles

2. 90°, complementary

3. 180°, supplementary

6 0
3 years ago
Read 2 more answers
Other questions:
  • A water tank holds 18000 gallons. How long will it take for the water level to reach 6000 gallons if the water is used at an ave
    12·2 answers
  • There are 95 white pieces of paper in a hat along with 5 blue pieces of paper. What is the theoretical probability that a blind-
    7·1 answer
  • (14/3 × 3/7) i need help ​
    6·2 answers
  • X(4-k)=p solve for k<br><br><br> I can't figure out how please help
    12·1 answer
  • What is the mean absolute deviation of the data set? {12, 10, 10, 8, 6, 7, 7, 12} 1 2 6 9
    5·1 answer
  • Deductions the week: federal tax $52.02, FICA 43.02 state 5.35 find the annual federal tax deduction
    9·1 answer
  • Which similarity statement describe the relationship between the two triangle? Check all that apply
    13·1 answer
  • HELP PLEASE (2) Select ALL of the statements that are true below:*
    15·1 answer
  • 7 to 10<br><br>Round the decimal to the nearest hundredth, then make that a percent
    9·2 answers
  • Find a linear differential operator that annihilates the given function. (Use D for the differential operator.) 4 ex cos 3x
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!