Posted by Anonymous on Saturday, November 24, 2007 at 4:48pm.
Should this be...
sin^2x - 1 = cos^2x ??
Your equation has two equal signs.
Yeah it should be, sorry for the typo
Hmm... that's tricky. I solved it one way (similar to your method), and it didn't work. Anyway, this works...
(1) Subtract the cos^2(x) from both sides.
(2) Substitute "1 - sin^2(x)" in for cos^2(x). That comes from the #1 Identity: sin^2(x) + cos^2(x) = 1.
(3) Simplify and factor.
You should get the right answer that way. Let me know if you run into any problems.
Related Questions
Math - Solving Trig Equations - Solve each equation for 0 is less than and equal...
Precalculs - I have no idea how to do these type of problems. -------Problem...
trig - What are the values of theta in the interval 0 less than or equal to ...
trig - tan theta= square root of 3 / 3 if o degrees is less than or equal to ...
algebra/trigonometry - What are the values of theta in the interval 0degrees ...
Math - Solving for Trig Equations - Solve the following equation for 0 less than...
Math - Solving Trig Equations - Solve each equation on the interval: 0 is less ...
trig - what are the values of theta in the interval 0 degrees is lessthan or ...
trig - given that 0 is less then or equal to theta and theta is less then or ...
Trig - Given 2secant^2 (theta) + 1 = 5 secant (theta), solve for (theta), to the...
For Further Reading
