thobza
thobza
11-03-2017
Mathematics
contestada
Show that cos(A+45)=cos45(cosA-sinA)
Respuesta :
ghanami
ghanami
11-03-2017
Hello here is a solution :
co(a+b) =cosacosb -sina sinb
cos(A+45)=cosAcos45-sinAsin45
cos45=sin45
cos(A+45)=cosAcos45-sinAcos45=
cos45(cosA-sinA)
Answer Link
VER TODAS LAS RESPUESTAS ( 94+ )
Otras preguntas
what is a Soviet-aligned nation in the Americas during the Cold War was
which would be more likely to show a shallow, 1.5-meter-deep depression in the ground: a 1-meter contour interval or a 5-meter contour interval?
What was the role of a Private during WW1?
The difference between a number divided by 3 and 4 is 20.
a^2=-42+13a solve by factoring ?
what is 7.75 in word form?
What are the steps to solving 46-3t=-23
factor this expression. r2+14r+48
what is 7.75 in word form?
Andy and his friend Sam were walking along the road together. Andy has a big bag of marbles. Unfortunately the bottom of the bag split and all the marbles spill