Saturday

August 2, 2014

August 2, 2014

Posted by **susmita** on Friday, June 29, 2012 at 12:41pm.

- trig -
**Steve**, Friday, June 29, 2012 at 4:31pmtanA = 2 in QIII means

sinA = -2/√5

cosA = -1/√5

cosA/(sin^3A + cos^3A)

= -1/√5 / (-8/5√5 - 1/5√5)

= -1/√5 / (-9/5√5)

= -1/√5 * -5√5/9

= 5/9

that's PI, not PIE!

**Related Questions**

Trig - Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < ...

trig 26 - simplify to a constant or trig func. 1. sec Ču-tan Ču/cos Čv+sin Čv ...

Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...

TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...

precalculus - For each of the following determine whether or not it is an ...

Trigonometry - Please review and tell me if i did something wrong. Find the ...

TRIG - what is another form of: sin (A+B) sin (A-B)/ cos^2 A cos^2 B a) cos^2 A...

trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...

maths - Choose the two options which are true for all values of x 1) cos (x) = ...

trig - it says to verify the following identity, working only on one side: cotx+...