Quick Question (1 Viewer)

[nrlwinner]

I know this is really simple, but I don't think I have learnt it.

How would you evaluae sin^2 30?

Is is sin900?

or 0.5 x 0.5

 

[Drongoski]

I know this is really simple, but I don't think I have learnt it.

How would you evaluae sin^2 30?

Is is sin900?

or 0.5 x 0.5

sin² 30 means (sin 30)² = 0.5 x 0.5

 

[adomad]

it's just looks neater to write (sin(30))^2 as sin^2(30)

 

[nrlwinner]

I'm having a brain freeze here. Could someone help me prove this equation

 

[addikaye03]

I'm having a brain freeze here. Could someone help me prove this equation

LHS=sin@/(1+cos@)

=sin@(1-cos@)/(1-cos@)(1+cos@)

[all i done above was multiply numerator and denominator by 1-cos@]

=sin@(1-cos@)/(1-cos^2@)

=sin@(1-cos@)/sin^2@

=1-cos@/(sin@)

=RHS

 

[Timothy.Siu]

sin 900

 

[scardizzle]

cool story bro