 # How Do You Solve Sin 50 Without A Calculator?

## What is the formula for SOH CAH TOA?

It’s a mnemonic device to help you remember the three basic trig ratios used to solve for missing sides and angles in a right triangle.

It’s defined as: SOH: Sin(θ) = Opposite / Hypotenuse.

CAH: Cos(θ) = Adjacent / Hypotenuse..

## What is sin 1 called?

The symbol for inverse sine is sin-1, or sometimes arcsin.

## What is the exact value of sin 45?

The exact value of sin(45) is √22 .

## How do you find sin 20 without a calculator?

Originally Answered: How do I find the exact value of sin 20 without using calculator? You should be able to find it using the trig identity: (I assume this is derived from the identity: sin(x+y) = sin(x)cos(y) + cos(x)sin(y), but used twice.

## What is SOH CAH TOA used for?

SOHCAHTOA is a mnemonic device helpful for remembering what ratio goes with which function. With these properties, you can solve almost any problem related to finding either a side length or angle measure of a right triangle. SohCahToa can ensure that you won’t get them wrong.

## How do you find sin 240 without a calculator?

sin(240) = sin(180 + 60) works too. Use the subtraction angle identity for sine to find the value of sin(240).

## How is sin calculated?

Sine (sin) function – Trigonometry. In a right triangle, the sine of an angle is the length of the opposite side divided by the length of the hypotenuse. … In any right triangle, the sine of an angle x is the length of the opposite side (O) divided by the length of the hypotenuse (H).

## How do you find sin 75?

Answer. Sin(A+B) = Sin A Cos B + Cos A Sin B. Sin 75 = Sin ( 45 + 30) = Sin 45 Cos 30 + Cos 45 Sin 30. Sin 75 = (1 / √2) ( √3 / 2) + (1 / √2) ( 1 / 2) = [ √3 + 1] / 2√2.

## What does SOH CAH TOA mean in texting?

A way of remembering how to compute the sine, cosine, and tangent of an angle. SOH stands for Sine equals Opposite over Hypotenuse. CAH stands for Cosine equals Adjacent over Hypotenuse. TOA stands for Tangent equals Opposite over Adjacent.

## What is the exact value of sin (- 240?

240 degrees is in the third quadrant, where the sin of the angle is negative. Subtracting 180 degrees from 240 degrees, you can see that the reference angle is 240-180 = 60 degrees.

## What is the exact value of sin 240?

sin (240) = sin (60 + 180) = – sin 60.

## What is the value sin 45?

Sin 45 Degrees The value of Sin 45 degree in decimal form is 0.7071067812. … In the right-angle triangle, Sine function can be defined as the ratio of the length of the opposite side of a triangle to its hypotenuse.