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Bogdan [553]
3 years ago
15

In triangle ABC, angle a and b are complementary, where the cos A= 0.5. What is the angle measure of B in degrees?

Mathematics
2 answers:
aleksley [76]3 years ago
8 0

Angle B measures 30 degrees.

Step-by-step explanation:

Step 1:

If two angles are complementary, the sum of the two angles will equal 90°.

So if angles A and B are complementary, the sum of the angles A and B will equal 90°.

It is given that cos A = 0.5, we can determine the value of A by taking the cos inverse of the value 0.5.

Step 2:

If cos A = 0.5, A = cos^{-1} (0.5) = 60^\circ. So angle A is 60°.

As A and B are complementary, angle A + angle B = 90°.

So 60° + angle B = 90°, angle B = 90° - 60° = 30°.

So angle B measures 30° while angle A measures 60°.

LekaFEV [45]3 years ago
3 0

Answer:1/2

Step-by-step explanation:

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2 1/2 divided by 1 7/8 <br> SHOW YOUR WORK and if you do i'll give you brainiest :)
Murljashka [212]

Answer:

1.33

Step-by-step explanation:

2 1/2=2.5

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=1.33

3 0
3 years ago
14 out of the 25 students passed the quiz. What percent of students passed the quiz ?
Mnenie [13.5K]

Answer:

56

Step-by-step explanation:

A fraction consists of two numbers and a fraction bar:

14/25

The number above the bar is the numerator: 14

The number below the bar is the denominator: 25

Divide the numerator by the denominator to get fraction's value:

Val = 14 ÷ 25

Hoped it helped

7 0
2 years ago
Standard normal curve between z=.42 and z=1.92<br> a= .6902<br> b= .3098<br> c= .1902<br> d= .8098
soldier1979 [14.2K]
The correct answer is Choice B: 0.3098.

To find the answer, you have to use a normal distribution table. Look up the percents for each z-score and subtract them to find the region between.

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4 0
3 years ago
What is the square root of 3.24
Mademuasel [1]
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5 0
3 years ago
What is the location of F on the decimal number line below?<br> Write your answer as a decimal
Masja [62]

Answer:

6.45

Step-by-step explanation:

Every part is 0.01 bigger or smaller

You can find it out by subtraction and then division

6.5 - 6.4 = 0.1

0.1 : 10 = 0.01

There are 10 parts that's why you divide it by 10.

If there will be 2 parts you will divide by 2

4 0
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