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
german
3 years ago
9

Which statement is false?

Mathematics
2 answers:
Sidana [21]3 years ago
8 0

Trigonometric functions which are related by having the same value at complementary angles are called cofunctions. Cofunctions of complementary angles are equal.

A. csc 20' = csc(90-70)=sec 70

B. cos 87' =  cos (90-3)=sin 3'

C. csc 40' =  csc(90-50) =sec50'  


D. tan 15' = tan(90-75)= cot 75'

Among all the option  c is not correct.

Option C is false.




arlik [135]3 years ago
5 0
Answer: Option <span>C. csc 40' = sin 50'
Because csc and sin are not cofunctions</span>
You might be interested in
Penelope went to the store to buy x pounds of broccoli for $1.10 per pound and y cans of soup for $2.50 each. In total, she spen
kati45 [8]
2.5y + 1.1x ∠ 10

2.5y = - 1.1x +10

y = (- 1.1/2.5)x + 4

Draw this function. It's descending (m negative). All values on the left of the lines satisfy this inequality


6 0
4 years ago
Could you please provide the answer as well as explain it, I will be very grateful...
Vilka [71]
Hello,

There is a mistake: it is 816 cm² !!! (an area)

length are multiplied by 2,
so area are mutiplied by 2²=4
Area B=816*4=3264 (cm²)


7 0
3 years ago
An arithmetic sequence is represented in the following table. Enter the missing term of the sequence.
bija089 [108]

a_1=-9\\\\a_2=a_1-8\to a_2=-9-8=-17\\\\a_3=a_2-8\to a_3=-17-8=-25\\\\a_4=a_3-8\to a_4=-25-8=-33\\\\\text{The general term of an arithmetic sequence:}\\\\a_n=a_1+(n-1)d\\\\a_1-first\ term\\d-common\ difference\\\\\text{We have}\ a_1=-9\ \text{and}\ d=-8.\ \text{Substitute:}\\\\a_n=-9+(n-1)(-8)=-9-8n+8=-8n-1\\\\\text{Put n = 43 and calculate}\ a_{43}\\\\a_{43}=-8(43)-1=-344-1=-345\\\\Answer:\ \boxed{?=-345}

4 0
3 years ago
Solve the equation.<br> -3n-4n-17=25<br> n=?
Leno4ka [110]

Answer:

n=-6

Step-by-step explanation:

-3n-4n-17=25

-7n-17=25

-7n=42

n=-6

4 0
3 years ago
Read 2 more answers
Which statement is true about this data set? {43, 46, 48, 57, 42, 47, 48, 44, 46, 45, 48}
vfiekz [6]

Answer: D) 57

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
Other questions:
  • What is 2/3 of the number 342
    6·1 answer
  • You make a necklace with blue, purple, and green beads in a ratio of 1:1:2. Total of 168 beads. How many green beads are there?
    7·2 answers
  • Select the property of equality used to arrive at the conclusion.
    9·1 answer
  • 34 - (6.78+2.54)= how do you solve this
    12·2 answers
  • Calculators are sold to students for 20 dollars each. Three hundred students are willing to buy them at that price. For every 5
    9·2 answers
  • Use the zero product property to find the solitions to the equation(x+2)(x+3)=12.
    13·1 answer
  • Simply 3x+8/5+4x+10/5 completely
    7·1 answer
  • Help pleaseeeeeeeeeeeeee
    14·2 answers
  • IREADY MATH LEVEL G<br><br> HELP ASAP DUE AT 11:59!!
    12·1 answer
  • Which expression is equivalent to 2 (-12r - 3) + (42 - })?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!