# What is the value of sin2x × cos 2x?

Table of Contents

## What is the value of sin2x × cos 2x?

To find the value of sin2x × Cos 2x, the trigonometric double angle formulas are used. For the derivation, the values of sin 2x and cos 2x are used. From trigonometric double angle formulas, Sin 2x = 2 sin x cos x ———— (i)

## What is the value of X if sin (X-20) ° = (3x-10) °?

Originally Answered: If sin (x-20) °= (3x-10) ° then what is the value of x? If you mean , all in degrees, 3x-10 has the same sine as x-20 if it equals where you add if is even ( degrees brings you full circle) or subtract is is odd ( minus any angle is the “supplementary” angle with same sine but opposite cosine and tangent).

**How to find the value of Sine for the same angle?**

Hence, we get the values for sine ratios,i.e., 0, ½, 1/√2, √3/2, and 1 for angles 0°, 30°, 45°, 60° and 90° Now, write the values of sine degrees in reverse order to get the values of cosine for the same angles. As we know, tan is the ratio of sin and cos, such as tan θ = sin θ/cos θ.

### Does 3×10 have the same sine as X20?

If you mean , all in degrees, 3x-10 has the same sine as x-20 if it equals where you add if is even ( degrees brings you full circle) or subtract is is odd ( minus any angle is the “supplementary” angle with same sine but opposite cosine and tangent). So for even, since must be ; or for odd, since must be

### What is the period of the cos(x) cos function?

The period of the cos(x) cos ( x) function is 2π 2 π so values will repeat every 2π 2 π radians in both directions.

**How do you find the cosine function in the fourth quadrant?**

The cosine function is positive in the first and fourth quadrants. To find the second solution, subtract the reference angle from 2π 2 π to find the solution in the fourth quadrant. Simplify 2π− π 6 2 π – π 6.