manhn29112005 manhn29112005

03-08-2021
Mathematics

contestada

[tex](cos^{2} x-sin^{2}x)^{2} -sin4x+sin^{2}2x=0[/tex]

Respuesta :

Аноним Аноним

03-08-2021

Answer:

x=22.5°

Step-by-step explanation:

(cos²x-sin²x)-sin4x+sin²2x=0

or, (cos2x)²-sin4x+sin²2x=0

or, cos²2x+sin²2x-sin4x=0

or, 1-sin4x=0

or, sin4x=1

or, 4x=90°

or, x=90°/4

or, x=22.5°

Answer Link

Otras preguntas

solve the following problem: (12×10^9)÷(6×10^5)

The outermost tissue of a tree trunk that is 6 feet in diameter would most likely be (A) epidermis (B) cork (C) cortex (D) phloem (E) xylem

what is the density of a orange if its mass is 158.2 g and the volume is 106 mL

I need help with the blanks

Two numbers have a product of 48 and a sum of 19 what are the numbers and how do you know

The volume of a rectangular prism is 270 cubic centimeters. The height of the prism is 5 centimeters. What should the length and width of the prism be? Explain

what does imperialism mean?

what were the 4 major causes of imperialism?

what are the factor pairs of 38

Can the sum of two mixed numbers be equal to 2 ? Explain why or why not.