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

Factor the expression. If the expression cannot be factored, say so.
Factor the expression. If the expression cannot be factored, say so.
What is 25% of $500.00? I think the answer is $475.00 Can someone verify if twenty five percent of 500.00 is $475.00
What all the multiples of 81?
Forget the motor When im on the boat Think of the best time To buy a new coat What am I......?
Factor the expression. If the expression cannot be factored, say so.
What were the contributions of the Harappan civilization?
What were the contributions of the Harappan civilization?
The ______ was established in 1943 to assist in the transition from a peacetime to a wartime economy ?
What is the creepiest sounding scale? What scale would u use for writing creepy music in other words