Saturday

April 18, 2015

April 18, 2015

Posted by **mrkkn** on Friday, July 16, 2010 at 7:49am.

- trig -
**Reiny**, Friday, July 16, 2010 at 8:13amFrom the ratios of sides of the 30-60-90 triangle you know that if

sinØ= +1/2 , then Ø = 30°

Also in the 4th quadrant, both the sine and tangent and of course their reciprocals are negative, the cosine is positive.

so

sinØ = -1/2 csc‚ = -2

cosØ = √3/2 secØ = 2/√3

tanØ = - 1/√3 cotØ = -√3

**Answer this Question**

**Related Questions**

trig - FInd the exact value pf the 6 trig function of alpha Given: point (-2,-6...

trigonometry - given that sin alpha/2 = 2/3, and that alpha/2 is in quadrant II...

trig - Find the values of the other five trigonometric functions for angle S. a...

trig - Find the values of the other five trigonometric functions for angle S. a...

trig - If sin alpha = -3/5, sin beta = -5/13, P(alpha) is in the third quadrant...

trig - express 20sin theta + 4 cos theta as R sin(theta + alpha) R sin(theta + ...

inverse trig function - How do I do this by sketching a triangle. sin( arcsin(1/...

trig - If cos 0 = - 1/2 and tan 0 > 0, find the quadrant that contains the ...

trig - Please find sin (alpha/2) and cos (alpha/2) sec alpha = 3, -pi/2 < ...

calculus - Interference Two identical tuning forks are struck, one a fraction of...