English, asked by kuldeeptripathi4220, 1 year ago

Sin70/cos20+ cosec20/sec70-2cos70×cosec20

Answers

Answered by anjalisingh558pdkbpe
1

alryt just change 70=90-20. change cosec ans sec into sin and cos

sin(90-20)/cos20+cos(90-20)/sin20-2*cos(90-20)/sin20

cos20/cos20+sin20/sin20-2*sin20/sin20

=0

Similar questions