Table of Contents

## What is sin x cos x equal to?

Answer : The expression for sin x + cos x in terms of sine is sin x + sin (π / 2 – x). Let us see the detailed solution now.

## What is the value of sin x if cos x 4 5 *?

Therefore, sin x = ±3/5 is the final answer.

**What is cos 2 equal to?**

Cos 2x is one of the double angle trigonometric identities as the angle in consideration is a multiple of 2, that is, the double of x. Let us write the cos 2x identity in different forms: cos 2x = cos2x – sin2x. cos 2x = 2cos2x – 1.

### What is the formula of 2sinxcosx?

We know that sin2x=2sinxcosx.

### What is the value of sin inverse 4 by 5?

1 Expert Answer Yes, there are an infinite number of angles for which sin(θ) = 4/5. However, the inverse sine function has a limited domain [-1, 1] and range [-90°, 90°], meaning that there is only one answer (≈53°) for sin-1(4/5).

**What is value of sin 2x?**

The general formula of sin 2x is sin 2x = 2 sin x cos x = 2 (sin x cos2x)/(cos x) = 2 (sin x/cos x) (1/sec2x) = (2 tan x)/(1 + tan2x).

#### How to find the equality between sin and cos?

cos(x)sin(x) + sin(x)cos(x) = sin(2x) But since we multiplied by 2 early on to get to that, we need to divide by two to make the equality, so cos(x)sin(x) = sin(2x) 2

#### Which is the absolute value of sin ( x )?

The absolute value is the distance between a number and zero. The distance between 0 0 and 1 1 is 1 1. Divide 2 π 2 π by 1 1. The period of the sin(x) sin ( x) function is 2π 2 π so values will repeat every 2π 2 π radians in both directions.

**What does cosx SiNx equal when multiplied by two?**

What does cosx sinx equal? If we multiply it by two we have Which we can say it’s a sum Which is the double angle formula of the sine But since we multiplied by 2 early on to get to that, we need to divide by two to make the equality, so

## How to calculate sin ( x ) on a calculator?

In order to calculate sin (x) on the calculator: 1 Enter the input angle. 2 Select angle type of degrees (°) or radians (rad) in the combo box. 3 Press the = button to calculate the result.