Monday

September 15, 2014

September 15, 2014

Posted by **CJ** on Thursday, January 13, 2011 at 1:23am.

- Math -
**MathMate**, Thursday, January 13, 2011 at 8:09amUse the double angle formula:

sin(2θ)=2sin(θ)cos(θ)

given

sin(θ)=1/5

cos(θ)=sqrt(1-(1/5)²))=sqrt(24)/5

**Answer this Question**

**Related Questions**

Math - Calculus - The identity below is significant because it relates 3 ...

precalculus - sinθ=12/13, θ lies in quadrant II. Find the exact value...

Math - 1. Find the exact value of 2tan pi/12 / 1-tan^2 pi/12 root 3/3? 2. Given ...

trigonometry - 5. If cot 2θ = 5/12 with 0 ≤ 2θ ≤ π...

math trigono - 1. If tanθ = –√3 , what is the value of cot ? 2. ...

Trig - Given that csc θ = -4 and tan θ > 0, find the exact value of...

trig - The terminal side of θ lies on a given line in the specified ...

Math - If sinθ=1/5 and θ is in Quadrant I, find the exact value of ...

Math/Trigonometry - Find the exact value of cosθ if sinθ=-2/3, and &#...

math - if cosθ=2/3 and tanθ<0 find the exact value sin(θ-5&#...