AssuntaGoering608 AssuntaGoering608
  • 15-07-2014
  • Mathematics
contestada

13. Find the exact value of sin 30 ° - sin 45 ° cos 45 ° .
a. 0
b. 1/2
c. 1
d. 2

Respuesta :

Аноним Аноним
  • 15-07-2014
[tex]sin30^o-sin45^ocos45^o\\\\sin30^o=\frac{1}{2}\\\\sin45^o=cos45^o=\frac{\sqrt2}{2}\\\\sin30^o-sin45^ocos45^o=\frac{1}{2}-\frac{\sqrt2}{2}\cdot\frac{\sqrt2}{2}=\frac{1}{2}-\frac{2}{4}=\frac{1}{2}-\frac{1}{2}=0\\\\Answer:a.[/tex]
Answer Link
vaibhavay
vaibhavay vaibhavay
  • 15-07-2014
sin30  1/2
sin45*cos45=1/2
=>  1/2  -  1/2 = 0
Answer Link

Otras preguntas

gandhi's name, mhatma, means?
Solve for the indicated variable. 6t + r = s for t.
What took Lincoln so long to issue the emancipation proclimation
the lcd of 7/90 and 119/150 is
At the same time, you can see very high price fluctuation in a short period of time is the word (fluctuation) in the sentence seems to be an ADJECTIVE ?
what is the second continental congress
which human species may have been the first to use crude tools?
what happens during periods
which are the best movie adaptations of Stephen King's books?
Could someone help me with these three paraphrases? You have to use the particles which have been given. Thank you in advance. 1. It's not a formal meeting.