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
noname [10]
3 years ago
5

given a is equal to 60 degree and 30 degree prove that sin a + b is equal to sin a cos b + cos a sin b ​

Mathematics
1 answer:
Feliz [49]3 years ago
8 0

Answer:

A = 60 and B = 30  

Now, A + B = 60 + 30 = 90  

Also, A – B = 60 – 30 = 30  

sin (A + B) = sin 90 = 1  

sin A cos B + cos A sin B = sin 60 cos 30 + cos 60 sin 30

You might be interested in
Which equation represents y = -x2 - 2x + 3 in vertex form?
Georgia [21]

Answer:

y = -(x + 1)² + 4

Step-by-step explanation:

y = -x² − 2x + 3

First, factor the leading coefficient from the first two terms.

y = -(x² + 2x) + 3

Complete the square.

y = -(x² + 2x + 1 − 1) + 3

Simplify and factor.

y = -(x² + 2x + 1) + 1 + 3

y = -(x + 1)² + 4

6 0
4 years ago
3x-5> 14 solve for x and to give your answer as an improper fraction in its simplest form
kirill [66]

Answer:

3x>14+5

3x>19

x>19/3

I hope it helps you

5 0
2 years ago
Kelly has 7 1/4 yards of rope. She cuts 3 inches off each end of the rope. Kelly will divide the remaining rope into 5 equal pie
lana [24]
If you take 3 inches off each end, that means you will be taking 6 inches off. If you take 6 inches away from 7 1/4 yards ,(7 yards, 9 inches,) you get 7 1/12 yards (7 yards, 3 inches).

(7 1/12) / 5 = 1.426repeating

So each piece of rope will be (Approximately) 1.4 or 1 2/5 yards.


(I think.)

3 0
4 years ago
Find a and b, if the points P(6,0) and Q(3,2) lie on the graph of ax + by =12
Musya8 [376]
The given equation is:
ax + by = 12
We are given that the two points (6,0) and (3,2) belong to this line. This means that these two points satisfy the equation of the line.
Therefore, to get the value of a and b, we will substitute with the given points in the equation and solve the resulting equations for a and b as follows:

For the point (6,0):
ax + by = 12
a(6) + b(0) = 12
6a = 12
a = 12/6 = 2

For point (3,2):
ax + by = 12
(2)(3) + b(2) = 12
6 + 2b = 12
2b = 12-6 = 6
b = 3

Based on the above calculations:
a = 2 and b = 3, therefore, the equation is:
2x + 3y = 12

6 0
3 years ago
Which place is the tenths and what is it rounded to? please answer quick thx​
Lubov Fominskaja [6]

Answer:

Step-by-step explanation:

see attached to identify which is the tenth's place

How you round the tenth's place depends on the digit in the hundredths place.

If the hundredths digit is less than 5, then you keep the tenths place the same (i.e round down)

If the hundredths digit is greater or equal than 5, then you increase the tenths place by 1 (i.e round up)

3 0
3 years ago
Other questions:
  • Lucina is given the equation y+8=−14(x+4) and asked to rewrite the equation in slope-intercept form.
    10·1 answer
  • A​ hot-air balloon is flying at an altitude of 2999 feet. If the angle of depression from the pilot in the balloon to a house on
    11·1 answer
  • Which points are distance of 5 units from the x-axis
    6·1 answer
  • What is the value of Tan θ?
    10·1 answer
  • I can't figure out how to distribute this
    11·1 answer
  • What is the area of the blue shaded region? please help ​
    7·1 answer
  • A rectangular room is 4 times as long as it is wide, and its perimeter is 50 meters. Find the dimension of the room
    13·1 answer
  • Please help me, I really suck at algebra
    14·1 answer
  • In a Company 75% of workers are men. If 825 people work for the company who Orangemen how many workers are there in all?
    5·1 answer
  • The fraction 24/5 lies between which 2 whole numbers?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!