Unit 6 trig identities

reciprocal identity of sinx

• 1/csc

• 1/sin

• cos/sin

• 1/cox

reciprocal identity of csc

• 1/secx

• 1/tanx

• 1/sinx

• 1/secx

reciprocal identity of cosx

• 1/cotx

• sinx/cosx

• 1/cosx

• 1/secx

reciprocal identity of secx

• 1/tanx

• 1/cosx

• cos/sin

• 1/cscx

reciprocal identity of tanx

• cosx/sinx

• 1/cotx

• 1/tanx

• 1/cosx

reciprocal identity of cotx

• 1/tanx

• 1/sinx

• sinx/cosx

• 1/cosx

quotient identity of tanx

• cosx/sinx

• sinx/cosx

• 1/cotx

• 1/tanx

quotient identity of cotx

• sinx/cosx

• cos/sinx

• 1/tanx

• 1/cotx

cos(a+b)

• (cosa)(cosb)-(sina)(sinb)

• (cosa)(cosb)+(sina)(sinb)

• (sina)(cosb)+(cosa)(cosb)

• (sina)(sinb)-

  (cosa)(sinb)

cos(a-b)

• (cosa)(cosb)-(sina)(sinb)

• (sina)(cosb)+(cosa)(sinb)

• (cosa)(cosb)+(sina)(sinb)

• (sina)(cosb)-(cosa)(sinb)