## What is an obtuse angle example in real life?

Some other examples of obtuse angles in real-life are given below: The angle between the hour and minute hand of a clock at 4 o’clock. The angle between the base of an open laptop and its screen. Angles formed by the blades of a ceiling fan.

**How can Sin Cos Tan be used in real life?**

You can even use trig to figure out the angles the sun will shine into a building or room. Construction workers also use sine, cosine, and tangent in this way. They need to measure the sizes of lots, roof angles, heights of walls and widths of flooring, and even more.

### How do you find the sine and cosine of an obtuse angle?

cos θ = −cos (180° − θ), where 90° < θ < 180°. In words this says: the sine of an obtuse angle equals the sine of its supplement, the cosine of an obtuse angle equals minus the cosine of its supplement.

**What household items have obtuse angles?**

Household Items Recliners in their reclined form show an obtuse angle between the backrest and the seat. The same is true for chaise lounges. In the kitchen, a folding dish rack when open and holding dishes also forms an obtuse angle.

## How can you use angles in real life situation?

Engineers use angle measurements to construct buildings, bridges, houses, monuments, etc. Carpenters use angle measuring devices such as protractors, to make furniture like chairs, tables, beds, etc. The angle can be seen in the wall clocks of our homes, made by hands of clocks.

**Which of them is example of obtuse angle?**

Some examples of obtuse angle degrees are 110°, 135°, 150°, 179°, 91°, and more. Hence, all angles that lie in the range of 90° to 180° are obtuse angles.

### How we use trigonometry in our daily life?

Other uses of trigonometry: Trigonometry can be used to roof a house, to make the roof inclined ( in the case of single individual bungalows) and the height of the roof in buildings etc. It is used naval and aviation industries. It is used in cartography (creation of maps).

**Can you take the sin of an obtuse angle?**

But the sine of an obtuse angle is the same as the sine of its supplement. That means sin ABC is the same as sin ABD, that is, they both equal h/c. Likewise, it doesn’t matter whether angle C is acute or obtuse, sin C = h/b in any case.

## What are some examples of obtuse angle?

Now we know that an angle that measures less than 180 degrees but more than 90-degrees is an obtuse angle. Some examples of obtuse angle degrees are 110°, 135°, 150°, 179°, 91°, and more. Hence, all angles that lie in the range of 90° to 180° are obtuse angles.

**What is a real life example of an acute angle?**

Real-life Examples of Acute Angles If we slice a pizza into 5 or more slices, each slice of pizza will make an acute angle. Each slice of the pizza makes an acute angle. Another example is the wall clock. The arms of a wall clock make acute angles at several hours of the day.

### What is a real life example of a straight angle?

Some of the straight angle examples in our day-to-day life are: A flat surface has an angle of 180 degrees. A straight stick has an angle which is straight or 180 degree. A plane inclined staircase represents a straight angle.

**Is a clothes hanger an obtuse angle?**

A coat hanger as well as the angle of a roof creates an obtuse angle, because they both contain an obtuse interior angle.

## What are some real life examples of acute angles?

**How can the concepts in trigonometry be applied in real life?**

Applications of Trigonometry

- Measuring grounds lots, and fields,
- Measuring ground surfaces,
- Making building perpendicular and parallel,
- Roof inclination and roof slopes,
- Installing ceramic tiles and stones,
- The height and width of the building.
- light angles and sun shading.

### Why do we use sine cosine and tangent?

It can help us better understand the connections between the sides and angles of rectangles. Sine, cosine, and tangent are important to the study of right triangles. Have you ever seen this type of triangle? If so, you know that one of its three angles is always 90° (a right angle).

**How does NASA use trigonometry?**

Astronomers use trigonometry to calculate how far stars and planets are from Earth. Even though we know the distances between planets and stars, this mathematical technique is also used by NASA scientists today when they design and launch space shuttles and rockets.

## What is sin cos and Tan for obtuse angles?

SIN, COS and TAN for Obtuse Angles Obtuse anglesare between 90° and 180°, and it can make the trigonometrygo a bit strange. To get these questions correct, you need to be able to realise when your answer is sensible and when it isn’t. If you’re expecting an obtuse angle and your answer is below 90, you know something’s up. COSINE for Obtuse Angles

**What is an obtuse angle with cosine?**

DEFINITION: An Obtuse Angle is one that is between 90° and 180°. All of the normal rules still work for obtuse angles with COSINE. Use the cosine rule as normal. Example – Find the angle x. For SIN the answer will come out between 0 and 90.

### How do you find an obtuse angle with sin?

For SIN the answer will come out between 0 and 90. Use the SIN rule as normal but you will then need to subtract this from 180° to get the correct obtuse angle. Example – Find the angle x. For Tan, if you know the angle is obtuse, you must add 180° to your initial answer. Example – Angle x is obtuse. Find the angle x when Tan x = -0.2.

**How do you find the sin and cosine of Tan?**

Use the cosine rule as normal. Example – Find the angle x. For SIN the answer will come out between 0 and 90. Use the SIN rule as normal but you will then need to subtract this from 180° to get the correct obtuse angle. Example – Find the angle x. For Tan, if you know the angle is obtuse, you must add 180° to your initial answer.