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
const2013 [10]
3 years ago
11

Prove the following 1- sin A sin (90-1)/cot (90-a)= sin^2 A

Mathematics
1 answer:
Anna [14]3 years ago
7 0

Im going to assume its (90 - A) so we have:-

1 - sinA sin (90 - A) / cot (90 - A)

Convert to sines and cosines:-

= 1 - (sin A cos A) / cos ( 90 - A) / sin ( 90 - A)

= 1 - (sin A cos A) / sin A / cos A

= 1 - cos^2 A

= sin^2 A which is what is required.


You might be interested in
In which pair of numbers is the first number of the multiple of the second number?
irina1246 [14]
Your answer would be c. 18,6 
7 0
2 years ago
What is the equation of this line in slope-intercept form (-1,5) and (1,-3)?
Harrizon [31]
Slope intercept means
y=mx+c
the slope of the line is m=(y2-y1)/(x2-x1)=(-3-5)/(1+1)= -4
the equation of the line is
y-5 = -4(x+1)
4x+y-1=0
changing the equation into slope intercept form
y= -4x+1
4 0
3 years ago
If 4 gallons of milk costs $16.76, how much would 7 gallons of milk cost?
Studentka2010 [4]
You would have to divide $16.76 by 4 to find out how much 1 gallon costs and after that multiply the amount a gallon costs by 7 to get your answer
7 0
3 years ago
Read 2 more answers
The director of an animal shelter need to raise more than $50,000 during a fundraiser. Write an inequality that represents the a
mr_godi [17]

Answer:

m > 50,000

This means the money, m, will be greater than 50,000

5 0
3 years ago
Se generan ondas, introduciendo en agua el borde de una regla 15 veces en 3.0 segundos. Calcular: a) el periodo de las ondas b)
Ne4ueva [31]

Answer:

Ver explicacion

Step-by-step explanation:

La frecuencia de una onda se define como el número de ciclos completos que realiza una partícula en un segundo.

f = n / t = 15 ciclos / 3 segundos = 5 ciclos por segundo o Hertz

El período de una onda es el tiempo que tarda la onda en realizar una oscilación o ciclo completo.

T = t / n = 3/15 = 0,2 segundos

6 0
3 years ago
Other questions:
  • What is x y-7=0 in standard form
    8·1 answer
  • Evan bought 6 batteries that cost $10 each and 6 batteries that cost $4 each the total cost was the same as he would have spent
    6·1 answer
  • How do i do this? please someone help me
    15·1 answer
  • The volume of a cone-shaped dessert is 10 CUBIC CENTIMETRES.
    15·1 answer
  • A car dealership is offering $1,500 cash back on the
    7·1 answer
  • The amount of​ carbon-14 present in animal bones t years after the​ animal's death is given by ​P(t)= -0.00012097t. How old is a
    12·1 answer
  • A typical red blood cell in human blood has a diameter of approximately 0.0007 cm. Enter this diameter in scientific notation.
    14·1 answer
  • Find the volume of this prism:
    10·1 answer
  • PLEASE SOMEONE HELP!! I need the answer right now
    9·1 answer
  • A questionnaire asks shareholders of a company to state whether they consider the
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!