archerests archerests

01-06-2021
Mathematics

contestada

Use angle addition formula to find the expression for cos(a+b). Use the same formula to
find cos(a+a).

Respuesta :

01-06-2021

Answer:

we have

Cos (a+b)=Cos aCosb-SinaSinb

for

Cos (a+a)=Cos aCosa-SinaSina=Cos²a-Sin²a

is a required answer.

Answer Link

urmm0000 urmm0000

01-06-2021

What they said!!!!!!!!!!!!

Answer Link

Otras preguntas

Please help meeeeeeee

The southern boundary of Washington territory was

A net force of 30 N gives a stone an acceleration of 5 m/s. Calculate the mass of the stone

Now, consider a right triangle with legs of lengths 5 cm and 12 cm. what is the length c of the hypotenuse of this triangle? express your answer to t

The fish tank has side lengths 20in, 10in and height 15in. The water level is two inches below the top of the tank. A glass sphere of radius 1in is dropped in

I neeed help plz If u know history plz solve?

–29 + 40Add or subtract.

Can u answer both history questions

The species richness of a community refers to the A) number of food chains. B) number of different species. C) energy content of all species. D) relative number

Question 3(Multiple Choice Worth 4 points) (08.06) An unknown number y is 10 more than an unknown number x. The number y is also x less than 3. The equations t