durga95 durga95

07-05-2019
Mathematics

contestada

How do you prove 4 (cos^4A + sin^4A) / (3+cos4A) = (cos^4A-sin^4A) sec2A?

Respuesta :

kaylasandvick kaylasandvick

07-05-2019

Step-by-step explanation:

Step 1: (sin²A+cos²A)²

Step 2: (a+b)² = a²+b²+2ab

Step 3: (sin²A+cos²A)²=sin⁴+cos⁴+2sin²Acos²A

make sure to use: sin²a+cos²a=1

Step 4: (1)²-2sin²Acos²A = sin⁴A+cos⁴A

Step 5: 1-2sin²Acos²A = sin⁴A+cos⁴A

Answer Link

Otras preguntas

Read the description of the Wife of Bath in "The Prologue" to The Canterbury Tales. Cite two quotations of direct and indirect characterization that imply this

Diana is running a successful remarketing campaign. She wants to expand her reach with other targeting options. While creating a new Google Ads Display campaign

What was one change taking place in America in the early 1800s that gave rise to an age of reform? The rapid growth of cities was bringing about overcrowding a

Vaccine development was a major advance in medical___.

Consider the points A ( 1 , 1 ) , B ( 2 , 4 ) , C ( 3 , − 1 ) , and D ( 5 , 6 ) . Point A is joined to point B to create segment AB and point C is j

Question 1 with 1 blankCuando la tierra tiembla (trembles) es un . Question 2 with 1 blankNemo es un . Question 3 with 1 blankUn conjunto de montañas es una . Q

As of the end of its accounting period, December 31, Year 1, Great Plains Company has assets of $940,000 and liabilities of $300,000. During Year 2, stockholder

How many milliliters of an aqueous solution of 0.170 M ammonium carbonate is needed to obtain 16.1 grams of the salt

please answer! thank you !

How to make your hair longer