Looking for some help!!! Have been asked to solve the following: "If sin13=p and cos12 = q express sin 25 in terms of p and q." Have got this far sin25 = sin (13+12) = sin13cos12 + cos13sin12 = p.q + ? Now what ? All ideas welcomed Thanks
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Originally Posted by statsnewbie Looking for some help!!! Have been asked to solve the following: "If sin13=p and cos12 = q express sin 25 in terms of p and q." Have got this far sin25 = sin (13+12) = sin13cos12 + cos13sin12 = p.q + ? Now what ? All ideas welcomed Thanks pfft. I guess you could use that and take the appropriate signs based on what quadrant you are in
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