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katrin2010 [14]
2 years ago
8

Write sin81 in terms of cosine

Mathematics
1 answer:
strojnjashka [21]2 years ago
7 0

Answer:

Since 81° is less than 90, we can express this in terms of a cofunction. sin(θ) = cos(90 - θ) sin(81) = cos(90 - 81) sin(81) = cos(9)

Step-by-step explanation:

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The following expression is written by some students: A+B=C. if ''A'' is always twice the value of ''B''. what is the value of '
ANEK [815]

Answer:

c=3

Step-by-step explanation:

a+b=c

a is double the value of b, so if a is 2, then b is 1.

2+1=3

hope this helps!

please mark me brainliest. thanks!

6 0
2 years ago
Alfonso scored 1818 points during his last basketball game, which was 40\%40% of the points the entire team scored. The entire t
soldi70 [24.7K]

Answer: 45 points

Step-by-step explanation:

Let the point of the entire team be represented by x.

Alfonso scored 18 points during his last basketball game, which was 40% of the points the entire team scored. This can then be represented in an equation as:

40% of x = 18

40% × x = 18

40/100 × x = 18

0.4 × x = 18

0.4x = 18

x = 18/0.4

x = 45

The team's total point is 45

8 0
3 years ago
Use the transitive property of equality to finish the equations
mrs_skeptik [129]

Answer:

since 4y=12 and 4y=2x then 4y=12=2x or 12=2x

8 0
2 years ago
There are 26 students in your class. There are 4 more girls than boys. Use a system of linear equations to find how many boys ar
baherus [9]
I hope this helps you




boys+4=girls



boys+girls=26



boys+boys+4=26



2.boys=22



boys=11



girls=15
6 0
3 years ago
What is this problem -12=4(x-7)-8x
Fofino [41]

-12=4(x-7)-8x

One solution was found :

                  x = -4

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :


                    -12-(4*(x-7)-8*x)=0


Step by step solution :

Step  1  :

Equation at the end of step  1  :

 -12 -  (4 • (x - 7) -  8x)  = 0

Step  2  :

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :


  4x + 16  =   4 • (x + 4)


Equation at the end of step  3  :

 4 • (x + 4)  = 0

Step  4  :

Equations which are never true :

4.1      Solve :    4   =  0

Hope this helps you, Have a nice day.

4 0
3 years ago
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