sukhd503 sukhd503
  • 02-07-2017
  • Mathematics
contestada

Cos 130 cos 40 + sin 130 sin 40

Respuesta :

Аноним Аноним
  • 02-07-2017
cos(a)cos(b) + sin(a)sin(b) = cos(a-b)

cos(130-40) = cos(90) = 0
Answer Link

Otras preguntas

Protein synthesis requires the use of mrna which
Which marketing activity is most directly served by the promotion element of the marketing mix? a. communicating value b. creating value c. capturing value d. d
Help please pronto!!! Please ignore my handwriting and the lighting!!!
May you plz help me I can’t stop till I finish and my fingers hurt badly
ABCD is an isosceles trapezoid. If AD||BC. m<B =(x+10) and m<C =(2x-30) find the measure of <D.
Nielsen media research collects national tv ratings by using a "people meter." this is a box that is attached to tv sets, vcrs, dvrs, cable boxes, and satellite
two supplementary angles differ by 48°. find the angles.
A rule of nature that tells you what will happen under certain conditions is a
help me in this question
The hydrolysis of atp yields the molecule ________.