Knownothing Knownothing

10-11-2018
Mathematics

contestada

Evaluate the product using a sum or difference of two functions, leave them in terms of sine or cosine.

2cos(56) cos(47)

Respuesta :

sqdancefan sqdancefan

10-11-2018

The applicable identity is ...

... 2cos(a)cos(b) = cos(a+b) +cos(a-b)

Using a=56, b=47, this becomes ...

... 2cos(56)cos(47) = cos(103) + cos(9)

Answer Link

Otras preguntas

find the discriminant of 3p^2-6p+8=0 and give the number and type of solutions to the equation

What is 18 & 20 & can you show work please??

Draw and label __ __ Trapezoid ZOID with ZO II ID and IO= ZD

Review the transactions listed below for thyme advertising company, and classify each transaction as either an operating activity, investing activity, or financ

The act which has six titles covering union government and operations is the: select one:

Someone help me out please with this question please I will really appreciate it a lot

______ terms have exactly the same _____ and ______

________ is the centralized policy-based management of all information required for access to corporate systems by people, machines, programs, or other resource

Which number is prime? 27 14 91 59 Which trinomial is a perfect square trinomial? a2 – 8a + 64 a2 – 4a + 64 a2 – 4a + 16 a2 – 8a + 16

45(2x+5)−4=1 don't attempt if you don't know half my grade depends on this question