## What is the value of cos 165 degree?

Explanation: Call cos 165 = cos t ->> cos 2t = cos 330 = cos (-30 + 360) = cos -30 = cos30=√32.

## What is the exact value of tan 105 degrees?

Complete step-by-step answer: By using specified tangent angle from the standard trigonometric ratios table i.e., tan60∘=√3, and tan450=1. Hence, the exact functional value of tan(105∘)=√3+11−√3.

0.26794919243

## What is the value of Sin Cos Tan?

Values of Trigonometric Ratios at Various Angles:

Angles (in degrees) 60°
Sin θ 0 √3/2
Cos θ 1 1/2
Tan θ 0 √3
Cot θ 1/√3

## At what angle is tan?

Tangent table

x tan(x)
45° π/4 1
60° π/3 1.732050808
90° π/2 not defined

## What is tan in radians?

The Tan function calculates the tangent of an angle (in a right triangle the side opposite an angle divided by the side adjacent the angle). In the diagram below, the tangent of X is given by the ratio b/a. The units of X are assumed to be radians. If X is in degrees, multiply it by Pi/180 to convert it to radians.

## How do I calculate an angle?

Example

1. Step 1 The two sides we know are Adjacent (6,750) and Hypotenuse (8,100).
2. Step 2 SOHCAHTOA tells us we must use Cosine.
3. Step 3 Calculate Adjacent / Hypotenuse = 6,750/8,100 = 0.8333.
4. Step 4 Find the angle from your calculator using cos-1 of 0.8333:

## How do you work out the angle of a straight line?

The angles on a straight line add up to 180 degrees. So x + y = 180. Therefore y = 180 – x. Putting this into the first equation gives us: a + b + 180 – x = 180.

flat angle

## Can an angle be 180 degrees?

Types of angles: Angles between 0 and 90 degrees (0°< θ <90°) are called acute angles. Angles between 90 and 180 degrees (90°< θ <180°) are known as obtuse angles. Angles that are 180 degrees (θ = 180°) are known as straight angles.