Muditha Muditha

17-08-2020
Mathematics

contestada

Cos 3 A + COS5A + COS7A+ Cos 15 A = 4 COS 4A COS5A COS6A

Respuesta :

17-08-2020

Your question has been heard loud and clear.

Lhs = 2cos[5A+3A/2]cos[5A-3A/2]+2cos[15A+7A/2]cos[15A-7A/2]

=2cos4AcosA+2cos11Acos4A

=2cos4A[cosA+cos11A]

=2cos4A[2cos[11A+A/2]Cos[11A-A/2]

=2cos4A2cos5Acos6A

=4cos4Acos5Acos6A=Rhs

Thank you

Answer Link

Otras preguntas

Cesar lanza monedas silnuntiadamente . determinar que es mas probable sacar tres caras o sacar dos sellos y una cara

Find the value of X. 4X=16

4. Using your responses from question 3, write a subjective summary of "Two Friends" Remember, a subjective summary may have objective parts, so you can use you

you are selling ice cream to raise money. you paid $60 for the ice cream cones from costco, and are selling each cone of ice cream for 2.50. write an equation h

What’s the value of x (9x-8) (x+10) (x+2)

Create a journal entry from the point of view of one of Poe’s characters. For example, you may be the old man or Cop from “The Tell-Tale Heart” discussing their

Benjamin Franklin suggested a ______ of the colonies at the ________ Conference

Fred and Bob share sweets in the ratio 3:7 Bob gets 48 sweets more than Fred How many sweets in total

Angles m∠OPQ = (x + 13)°, m∠RPS = (4x − 8)° are complementary. (I've already done the other two parts of the question) x = 17° m∠OPQ = 30° m∠RPS = 60° Could the

They usually featured a motif called taotie. What was the taotie?