Sum difference quiz

(sinu)(cosv) + (cosu)(sinv) =

• cos(u - v)
• cos(u + v)
• sin(u - v)
• sin(u + v)

(sinu)(cosv) - (cosu)(sinv) =

• cos(u - v)
• cos(u + v)
• sin(u - v)
• sin(u + v)

(cosu)(cosv) - (sinu)(sinv) =

• cos(u - v)
• cos(u + v)
• sin(u - v)
• sin(u + v)

(cosu)(cosv) + (sinu)(sinv) =

• cos(u - v)
• cos(u + v)
• sin(u - v)
• sin(u + v)

(tanu + tanv)/(1-(tanu)(tanv))

• tan(u - v)
• (tanu)(tanv)
• tan(u + v)
• tanu - tanv

(tanu - tanv)/(1-(tanu)(tanv))

• tan(u - v)
• tanu - tanv
• tan(u + v)
• None of the above

(tanu - tanv)/(1+(tanu)(tanv))

• tan(u - v)
• tanu - tanv
• tan(u + v)
• None of the above