सिद्ध कीजिए कि :
`(sin45^(@))/(cos 45^(@))+(cos 45^(@))/(sin 45^(@))-4 cos 60^(@)=0`

2sin45^(@)cos45^(@)

sin 45^(@)(cos 45^(@)) =…………..

Evaluate sin45^(@)+cos45^(@)

Value of sin45^@/cos45^@

sin^(2)45^(@)+cos^(2)45^(@)=

The value of sin45^(@)+cos45^(@) is :

2 sin 45^@.cos 45^@ =………

(sin30^(@))/(cos45^(@))+(cot45^(@))/(sec60^(@))-(sin60^(@))/(tan45^(@))+(cos30^(@))/(sin90^(@))=

What is the value of |{:(cos 15^(@),sin 15^(@)),(cos 45^(@),sin 45^(@)):}|xx|{:(cos 45^(@),cos 15^(@)),(sin 45^(@),sin 15^(@)):}| ?