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Lady bird [3.3K]
3 years ago
9

The sine of 49° is equal to the cosine of what angle?

Mathematics
1 answer:
Digiron [165]3 years ago
6 0
Sinα=cos(90-α)  this is an identity which you need to know...

in this case:

sin49°=cos41°
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The diagram below shows the rectangle PLUM.
Illusion [34]

Answer:

Area of rectangle PLUM = 75.00 square units

Step-by-step explanation:

Since diagonal of rectangle divides the rectangle into two equal triangles,

Therefore, area of the rectangle PLUM = 2× area of triangle PLM

By the mean proportional theorem,

In ΔPLM,

AP² = AM × AL

6² = AM × 8

AM = \frac{36}{8}

AM = 4.5 units

Area of PLM = \frac{1}{2}(\text{Base})(\text{height})

                     = \frac{1}{2}(ML)(AP)

                     = \frac{1}{2}(8 + 4.5)(6)

                     = 12.5 × 3

                     = 37.5 units²

Now area of rectangle PLUM = 2×37.5 = 75 units²

Therefore, area of the rectangle is 75.00 square units.

3 0
3 years ago
You're playing a game where you defend your village from an orc invasion. There are 3 characters (elf, hobbit, or human) and 5 d
Salsk061 [2.6K]

Answer:

1/15

Step-by-step explanation:

You have a 1/3 chance of being an elf.

You have a 1/5 change of having the magic tool.

1/3 × 1/5 = 1×1/3×5 = 1/15

5 0
3 years ago
Read 2 more answers
Solve the for variable<br><br><br>c+7=13<br><br><br>c = ?
nika2105 [10]

Answer:

c=6

Step-by-step explanation:

c+7=13

-7        -7

c=13-7

c=6

7 0
3 years ago
Which factoring method would be best to factor x^2 - 9?
Vinil7 [7]

Answer:

  D.  difference of squares

Step-by-step explanation:

Both of the terms x^2 and 9 are squares, so their difference is the difference of squares. The factorization of that is a "special form" that can be usefully memorized.

  a^2 -b^2 = (a -b)(a +b)

  x^2 -9 = (x -3)(x +3)

8 0
3 years ago
There are 11 reams of paper in a case. How many total reams of paper are in 12 cases?
s2008m [1.1K]
Formula is:
Number of reams per case x number of cases

11 x 12 = 132 reams
8 0
2 years ago
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