Wednesday

April 23, 2014

April 23, 2014

Posted by **lindsay** on Wednesday, May 2, 2012 at 4:35pm.

a. Sin(x + pi/4 + sin(x - pi/4)= -1

b. Sin(1/3 x+5) = 1/2

- trigonometry -
**Steve**, Wednesday, May 2, 2012 at 4:54pmrecalling that sin pi/4 = cos pi/4 = 1/√2

and

sin(a+b) = sina*cosb + cosa*sinb,

a.

x = 5pi/4 or 7pi/4

b.

x/3+5 = pi/6 or 5pi/6

x = 13pi/2-15

**Related Questions**

Trigonometry - 9x^4-24x^3+16x^2 (Find all solutions!)

Trigonometry - Find all solutions on the interval (0,2pi): 2-2cos^2=sinx+1

Trigonometry - Find all solutions between 0 and 2pi to tan(x)=-Squareroot3 ...

Math-trigonometry - Several questions from my homework, any are appreciated. ...

Trigonometry - Find all solutions of the equation in the interval [0,2pi] ...

Trigonometry - Find all solutions between 0 and 2pi. Round to two decimal places...

Trigonometry - Use the half-angle identities to find all solutions on the ...

Trigonometry - Use the half-angle identities to find all solutions on the ...

Help Needed! Precalculus - Find all solutions to cos(8alpha)-cos(2alpha)=sin(...

Precalculus - Find all solutions to 2 cos(theta) = - 1 on the interval 0 less ...