If sin(@) = 3/5 and @ is in Quad II, determine in EXACT form

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MathRaven

If sin(@) = 3/5 and @ is in Quad II, determine in EXACT form

Postby MathRaven » Sun Jul 08, 2012 8:37 pm

If you are capable of completing these, please show all your work.

If sin(@) = 3/5 and @ is in Quad II, determine in EXACT form the following:

a) sin(@ + pi/4)
b) cos(5pi/3 - @)
c) cos(20)
d) csc(pi/2 - @)

theshadow
Posts: 102
Joined: Sun Feb 22, 2009 11:12 pm

Re: If sin(@) = 3/5 and @ is in Quad II, determine in EXACT

Postby theshadow » Tue Jul 10, 2012 1:36 am

MathRaven wrote:If sin(@) = 3/5 and @ is in Quad II, determine in EXACT form the following:

a) sin(@ + pi/4)
b) cos(5pi/3 - @)
c) cos(20)
d) csc(pi/2 - @)

what do you get when you plug into the angle sum and angle diff. formulas? (shown here)


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