cosec^2 67°- tan^2 23° =1. Plz solve it . and those who need thanks follow me .plz complete my 500 followers. Follow me=10 thanks. instead of ur following,in return I will give you many many thanks reallly!!☺. u can check it by doing so.
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1+tan2( 90-67)-tan2 23
1+0=1
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