devb99
devb99
29-03-2018
Mathematics
contestada
can someone help me out with number 2?
Respuesta :
Banabanana
Banabanana
29-03-2018
[tex]\sin255^o=\sin(300^o-45^o)=\sin300^o\cos45^o-\cos300^o\sin45^o= \\\\=- \frac{ \sqrt{3} }{2}\cdot \frac{ \sqrt{2} }{2}- \frac{1}{2} \cdot \frac{ \sqrt{2} }{2}=- \frac{ \sqrt{6} }{4} - \frac{ \sqrt{2} }{4}= -\frac{ \sqrt{6}+\sqrt{2} }{4}[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 99+ )
Otras preguntas
answer please please
What is the remainder after you divide 7*7*7... 124 times by 4
There are 48 students in a school play. The ratio of boys to girls is 5:7. How many more girls than boys are in the play? Explain how you found your answer
if the original quantity is 15 and the new quantity is 4, what's the percent increase?
who wants to make a research paper here? i need help guys.
After cutting the grasses in your garden,is there a change that happened ?what is the change?
Carmen is designing an intersection of the rail line and four streets. She wants to know which streets are parallel. Transversal t crosses lines c, d, e, f form
What does the expression (20-w)w represent
Explain what these women knew their children had to know
The harness-room at the end of the stables was broken open; the bits, the nose-rings, the dog-chains, the cruel knives with which Mr. Jones had been used to cas