Posted by y912f on Thursday, January 15, 2009 at 5:00pm.
im really stuck on these, can anyone help me and also explain how to solve them:
Find the exact values of s in the given intervals that have the given circular function values.
1. [pi/2, pi]; sin s=sqrt2/2
2. [pi/2, pi]; cos s=sqrt3/2
thnks:)

trigonometry  Damon, Thursday, January 15, 2009 at 7:44pm
sqrt 2 is the legs of a 45,45, 90 triangle, hypotenuse is 2
sqrt 3 is the side opposite the 60 degree angle in a 30,60, 90 triangle. (legs are 1 and sqrt 3, hypotenuse is 2)
Learn those right triangles by heart. They come up constantly.

trigonometry  y912f, Thursday, January 15, 2009 at 7:52pm
how does that help me find s though..
Answer This Question
Related Questions
 trigonometry  find the exact values of s in the given intervals that have the ...
 Precalculus  Given: f(x) = X^2x evaluate: f(sqrt2 + 3) I have worked out this ...
 MATH  1.)Find the exact solution algebriacally, if possible: (PLEASE SHOW ALL ...
 calculus  Find the extreme values of the function for the given intervals. 2x^3...
 Trigonometry  1.Find the missing values given that Ø in degrees=270. 2.Find the...
 Calculus  The function f is continuous on the interval [4, 15], with some of ...
 Precalculus check answers help!  1. Which expression is equivalent to cos ...
 calculus 1  f(x) = 3x^3  9x + 5 find the: 1) zeroes or undefined values 2) ...
 AP Calculus AB  The function f is continuous on the interval [4, 15], with some...
 Math(Please help)  Using the equation y=yo + (vo sin Q) t  1/2gt^2 I have to ...
More Related Questions