Question

tan²∅ cos²∅ = cos²∅
yur kisi ko aata h tk btta do​

Answer 1

Answer:

Step-by-step explanation:

tan²Ф=sin²Ф/cos²Ф

sin²Ф/cos²Ф x cos²=sin²Ф

sin²Ф=1-cos²Ф

cos²Ф=1

Answer 2

Step-by-step explanation:

LHS= tan²∅ - sin²∅= sin²∅/ cos²∅ - sin²∅= sin²∅- sin²∅cos²∅/cos²∅= sin²∅(1-cos²∅)/cos²∅= sin²∅(sin²∅)/cos²∅= 1 ...