trigo identities qns

• Blasst

  20 Feb 12, 22:05

  Help pls! Prove the identity 1-2sinXcosX/(sin sq)X-(cos sq)X= tanX-1/tanX+1 Prove the identity [(cot sq) X+(csc sq) X][(tan sq) X+(sec sq) X] =2(sec sq) X(csc sq) X +1