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Mariulka [41]
4 years ago
13

If sin Ѳ = cos 40, find the value Ѳ

Mathematics
2 answers:
Jet001 [13]4 years ago
7 0

Answer:

Θ = 50°

Step-by-step explanation:

Using the cofunction identity

cosx = sin(90 - x)

Given

cos40° = sin(90 - 40)° = sin50° ⇒ Θ = 50°

Andrej [43]4 years ago
7 0

Answer:

Ѳ = 50

Step-by-step explanation:

Sin Ѳ = cos 40

Ѳ =  \sin ^{ - 1} ( \cos(40) )

Simplify

Ѳ =   sin^{ - 1} (0.7660444431) \\Ѳ = 50

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Which fraction is equivalent to -6 -(-9)/8
Marat540 [252]

Answer:

2/8 = 1/4 = 0.25

Step-by-step explanation:

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3 years ago
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Give a big-o estimate for the number of operations (where an operation is an addition or a multiplication) used in this segment
Marianna [84]
We have a "rectangular" double loop, meaning that both loops go to completion.
So there are 3*4=12 executions of t:=t+ij.

Assuming two operatiions per execution of the innermost loop, (i.e. ignoring the implied additions in increment of subscripts), we have 12*2=24 operations in all.

Here the number of operations (+ or *) is exactly known (=24). 

Big-O estimates are used for cases with a varying scale of operations, governed by a variable (usually n) to indicate the sensitivity of the number of operations relative to a change in the size of n.

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6 0
4 years ago
Solve by substitution <br> 1. 6x+ 5y=7 x-y=3<br> 2. 3a +2b =4 2a + b=6<br> 3. 2x + y= 4 4x -y=2
Juli2301 [7.4K]

Answer:

1. y = 11

x = -48

2. a =8

b= -10

3. x= 1

y= 2

Step-by-step explanation:

1 . 6x + 5y = 7

x-y= 3

6x+5y = 7

6x-6y =18

-1y = - 11

6x + 5y = 7

y = 11

6x + 55 = 7

6x = -48

x = -48

8 0
3 years ago
The square and the triangle have equal perimeters.
Tamiku [17]
I think not because a square has four sides and a triangle has three.
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4 years ago
The third angle of an isosceles triangle is 16 o less than the sum of two equal angles. Find
vodka [1.7K]

Answer:    49°, 49°, 82°

<u>Step-by-step explanation:</u>

Let x represent the base angles

then 2x - 16 is the vertex angle.

Triangle Sum Theorem states that the sum of the angles is 180°

(x) + (x) + (2x - 16) = 180

                 4x - 16 = 180

                       4x = 196

                         x = 49

Base angles: x = 49

Vertex angle: 2(49) - 16 = 82

                                   

6 0
3 years ago
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