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
Sliva [168]
3 years ago
7

Cos 130 cos 40 + sin 130 sin 40

Mathematics
1 answer:
Liula [17]3 years ago
5 0
Cos(a)cos(b) + sin(a)sin(b) = cos(a-b)

cos(130-40) = cos(90) = 0
You might be interested in
A triangular prism is 40 millimeters long and has a triangular face with a base of 24 millimeters and a height of 35 millimeters
abruzzese [7]

Answer:

26,508

Step-by-step explanation:

To find out how to solve this is that we first need to know that Triangular prisms have their own formula for finding surface area because they have two triangular faces opposite each other. The formula A=12bh is used to find the area of the top and bases triangular faces, where A = area, b = base, and h = height.

Also: To find the total surface area of a prism, you need to calculate the area of two polygonal bases, the top face and bottom face. And then calculate the area of lateral faces connecting the bases. Add up the area of the two bases and the area of the lateral faces to get the total surface area of a prism.

The top= 12 x 24 x 35 = 10,080

The lateral faces: 12 x 37 x 37 = 16,428

Surface Area= 10,080 + 16,428 = 26,508

7 0
2 years ago
If ΔABC ≅ ΔDEF, then what corresponding parts are congruent?
labwork [276]

Answer:

its A.

Step-by-step explanation:

5 0
2 years ago
How much is a 15% tip if the meal was $32?
Digiron [165]
0.15(32) = 4.80 <=====
8 0
3 years ago
Read 2 more answers
Find the slope. ASAP
vagabundo [1.1K]
The answer is number 4
3 0
3 years ago
Selen had 4 times....
stellarik [79]
I think this is the answer
A)Cathy had $6 at first
B)Selena has $24 at first
3 0
3 years ago
Other questions:
  • Round 62,981 to the nearest ten
    7·1 answer
  • Write the recursive formula for 6, 17, 28, 39, 50
    5·1 answer
  • an outdoor deck is 7 feet wide the perimeter of the deck is 64 feet what is the length of the deck use the numbers to write an e
    11·1 answer
  • Consider an unreliable communication channel that can successfully send a message with probability 1/2, or otherwise, the messag
    12·1 answer
  • Find an equation of a line through (-2, 4) and perpendicular to -x+8y=16
    6·2 answers
  • Find the mode of the data.
    7·2 answers
  • So how do u add fractions?​
    11·2 answers
  • Put this fro greaest to least 0.35,4/9,42%,3/8
    7·1 answer
  • please help, i will mark brainliest. i will report spam answers
    11·1 answer
  • Three-fifths of the members of the Spanish club are girls. There are a total of 30 girls in the Spanish club. Which statements c
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!