AhavaK23332
AhavaK23332
25-10-2022
Mathematics
contestada
cos2 0-cos 20 = sin2 0
Respuesta :
JacaiA323362
JacaiA323362
25-10-2022
[tex]\begin{gathered} \cos ^2(x)-\cos (2x)=sen^2(x) \\ \text{ }\cos ^2(x)-sen^2(x)\text{ = }\cos (2x) \\ \end{gathered}[/tex]
According to Double identities
[tex]\cos (2x)=2cos^2(x)-1[/tex][tex]\begin{gathered} \cos ^2(x)-sen^2(x)=2\cos ^2(x)-1 \\ -sen^2(x)=2\cos ^2(x)-\cos ^2(x)-1 \\ -sen^2(x)=\cos ^2(x)-1 \\ 1=\cos ^2(x)+sen^2(x) \end{gathered}[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 14+ )
Otras preguntas
A 33 N box is held up by two ropes, each of which make the same angle with the horizontal. If the tension in each rope (T) is 25 N, what angle are the ropes mak
How can you experiment with the texture of your music? A. By writing an ostinato B. By changing rhythms C. By combining new instruments D. By changing dynamics
Next, nate wants to add a date placeholder to his template. first, he places his insertion point a line before the company placeholder. use the drop-down menus
How has presidential power increased over the past several decades, and what are some very real limitations to the president's power?
2. In a chemical reaction, what do we call the original substances? 3. In a chemical reaction, what do we call newly made substances? 4. What are the three comm
Evaluate each expression when x = 2. Number 31 i will give brainliest
What is the answer okkkkkkkkkkk
PLSSSS HELPPPP Which is one difference between reactants and products? (1 point) A. Products are pure substances while reactants are not. B. Products exist in d
when subtracting two non-zero positive rational numbers (with the subtrahend larger than the minuend), the difference will always be ________ than the minuend a
Find an example from the paragraph that supports the topic sentence:
