triangle: evaluate 6 sin(45deg) + 1/2 cos(60deg)

[humakhan]

draw the necessary reference triangle and evaluate:

6 sin 45degrees + 1/2 cos 60degrees

6 * 0.707106781 + 1/2 * 0.5
4.242640686 + 0.25
4.492640686

now how do i draw a triangle for that :?: :?

 

[stapel]

You were supposed to draw first, then evaluate. How did you evaluate sin(30 degree) or cos(60 degrees) exactly without the triangle? Have the basic reference angles not been covered in class, so you're needing links to lessons...?

Thank you.

Eliz.

 

[humakhan]

You were supposed to draw first, then evaluate. How did you evaluate sin(30 degree) or cos(60 degrees) exactly without the triangle? Have the basic reference angles not been covered in class, so you're needing links to lessons...?

Thank you.

Eliz.

hello
you see i have a calculator..advanced calculator...so thats why i got the answer...
ok
now if you can help me with the shape that will be great but if not than i'll try to do it myself . thank you

 

[stapel]

I'll ask again: Have reference triangles not yet been covered in class? Are you requesting lessons on this topic?

Thank you.

Eliz.

 

[Denis]

huma, too tired to google "reference triangle"?
You'll get sites like:
http://mathworld.wolfram.com/ReferenceTriangle.html