## What is sin cos and tan used for?

Sin, cos, and tan are the basic trigonometric ratios in trigonometry, used to study the relationship between the angles and sides of a triangle (especially of a right-angled triangle).

**What inverse tan 1?**

Answer: The value of tan-1 (1) is π / 4, and tan-1 (tan 1) is π / 4. Let’s find the values of inverse trigonometric ratios.

**What is cosine used for?**

The cosine rule is useful in two ways: We can use the cosine rule to find the three unknown angles of a triangle if the three side lengths of the given triangle are known. We can also use the cosine rule to find the third side length of a triangle if two side lengths and the angle between them are known.

### What is the use of sine function?

As we learned, sine is one of the main trigonometric functions and is defined as the ratio of the side of the angle opposite the angle divided by the hypotenuse. It’s important for finding distances or height and can also be used to find angle measures, which are measured in radians.

**What does Sohcahtoa stand for?**

“SOHCAHTOA” is a helpful mnemonic for remembering the definitions of the trigonometric functions sine, cosine, and tangent i.e., sine equals opposite over hypotenuse, cosine equals adjacent over hypotenuse, and tangent equals opposite over adjacent, (1) (2)

**What is the formula for cos sin Tan?**

An easy way is to derive it from the two formulas that you have already done. In any angle, the tangent is equal to the sine divided by the cosine. Using that fact, tan(A + B) = sin(A + B)/cos(A + B).

#### Where does tangent equal 1?

Tangent is defined as the ratio of the opposite side/ adjacent side. Since this is an isosceles triangle these two sides, which neither one is the hypotenuse, must be equal so the tangent will equal 1, because the fraction will reduce to 1.

**What is the function of Tan?**

The TAN function returns the tangent value of the given angle. =TAN(Number) Whereas “Number” is the angle (in radians) whose tangent value has to be found.

**How do you calculate Tan angle?**

Tan of the angle in the illustration above is calculated by dividing the length of the Opposite by the length of the Adjacent. If the angle is 7, then the tan of 7 degrees will be 0.123.