if sec(¢+@)+sec(¢-@)=2sec¢ then proove that cos²¢=1+cos@
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Sec(¢+@) can be written as 1/cos (¢+@). And cos (¢+@}= cos¢.cos@-sin¢sin@ ,and cos(¢-@)= cos¢.cos@+sin¢.sin@.
After that proceeding we will get the the required proof.
Hope it will help you.
After that proceeding we will get the the required proof.
Hope it will help you.
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HELLO DEAR,
LET ¢=A
and ,@=B
I HOPE ITS HELP YOU DEAR,
THANKS
LET ¢=A
and ,@=B
I HOPE ITS HELP YOU DEAR,
THANKS
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