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3 years ago

Which angles are obtuse angles in the figure shown

Mathematics

1 answer:

earnstyle [38]3 years ago

5 0

The answer is D. ∠FVI and ∠GVE. An obtuse angle must be wider than 90° (like the corners of a square or rectangle) and less than 180° (literally a straight line).

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Use the order of operations to simplify this expression. 2 + 4(5 − 8)

Blizzard [7]

Answer:

5 - 8 = -3

4 x -3 = -12

2 + -12 = -10

Step-by-step explanation:

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3 years ago

Find the precentage 87% of 55

kotegsom [21]

The answer is 47.85 because you're just multiplying the percentage to the given number, but first, convert the percentage into a decimal.

4 0

4 years ago

Read 2 more answers

What is the measure of angle x?

zhuklara [117]

Degree measuresRemember -- the sum of the degree measures of angles in any triangle equals 180 degrees. Below is a picture of triangle ABC, where angle A = 60 degrees, angle B = 50 degrees and angle C = 70 degrees.

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4 years ago

The speed of light is about 300,000 kilometers per second. The Sun is about 93 million miles from Earth. How many minutes does i

spin [16.1K]

Answer: 8.3 minutes

Step-by-step explanation:

1 mile is to 1.60934km so 93 million miles is:

= 93 * 1.609

= ‭149,637,000‬ km

Travelling at 300,000 km per second, the number of seconds it takes is:

= ‭149,637,000‬/300,000

= ‭498.79‬ secs

In minutes this is:

= ‭498.79‬/60

= 8.3 minutes

4 0

3 years ago

I need help with trigonometry Again..

tigry1 [53]

Answer: C. - √2

Step-by-step explanation:

Given requirements from the question

Find the exact value of sec 135°

Convert into common trigonometric expression

sec = secant

secx = 1 / cosx

Therefore, sec 135° = 1 / (cos 135°)

Find the reference angle

135° is quite a complicated angle, but it is possible to simplify it by finding its reference angle.

Since 135° is in the second quadrant, its reference angle will be

180° - 135° = 45°

However, we need to consider the positive and negative.

In a coordinate plane, the clue is (A S T C), which corresponds to the positive values in each quadrant. In the QI, "All" are positive. In the QII, sine is positive. In the QIII, the tangent is positive. In QIV, cosine is positive.

Therefore, when the value of cosine is in QII, it is negative.

The reference angle = - (1 / cos 45°)

Determine the final value

Given that the reference angle = - (1 / cos 45°)

cos 45° = 1 / √2

Therefore:

sec 135° = - (1 / cos 45°) = - (1 / (1 / √2)) = $\boxed{-\sqrt{2} }$

Hope this helps!! :)

Please let me know if you have any questions

5 0

2 years ago