Question

What is the value of w?

A 7
B 3.5
C 7√3
D 14

will post attachment in a sec.

Answer 1

\[\cos \theta = \frac{ adjacent }{ hypotenuse }\]

Answer 2

Oh, wait, ok. so..

\[\cos 30 = 7\sqrt{3}\div w\]

?
@rishavraj

Answer 3

http://www.intmath.com/trigonometric-functions/2-sin-cos-tan-csc-sec-cot.php

Answer 4

yup :)) good work @deercult

Answer 5

\[\cos ~30 = \frac{ 7\sqrt3 }{ w }\]

Answer 6

so whts the value of cos30??

Answer 7

Right now it's just:

\[\frac{ 7\sqrt{3} }{ w }\]

We have to find w to figure that one out, yes?

Answer 8

Sorry if I'm missing the point x(

Answer 9

u know
\[\cos 30 = \frac{ \sqrt3 }{ 2 }\]

Answer 10

so
\[\frac{ \sqrt3 }{ 2 } = \frac{ 7\sqrt3 }{ w }\]

Answer 11

so,

\[w \sqrt{3} = 2*7\sqrt{3}\]

\[w \sqrt{3} = 14\sqrt{3}\]

Yes? You cross multiply right?

Answer 12

@rishavraj Is it 14?

Answer 13

Yep, it was. :Y Thanks a ton, dude