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" ust-7"2tan^(2)45^(@)+cos^(2)30^(@)-sin...

" ust-7"2tan^(2)45^(@)+cos^(2)30^(@)-sin^(2)60^(@)+1" [ firt "2114" ."

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2tan ^ (2) 45 ^ (@) - + cos ^ (2) 30 ^ (@) - sin ^ (2) 60 ^ (@) is

2 tan ^ 2 45 ^@ + cos ^ 2 30 ^@ - sin ^ 2 60 ^@ = ?

4sin^(2)60^(@)+3tan^(2)30^(@)-8sin45^(@)*cos45^(@)

If tan^(2) 45^(@)-cos^(2) 60^(@)=x sin 45^(@) cos45^(@) tan 60^(@) , then find the value of x.

Find the value of the following: (i) "sin"^(2)30^(@)+"sin"^(2)45^(@)+"sin"^(2)60^(@)+"sin"^(2)90^(@) (ii) 2"sin"^(2)30^(@)-3cos^(2)45^(@)+cos^(2)60^(@)

Find the value of, 2 tan 45^(@)+cos 30^(@)-sin 60^(@) .

Find the value of 5tan^(2)30^@+4cos^(2)45^@-sin^(2)60^@+1

sin^(2) 60^(@) + 2 tan 45^(@) - cos^(2) 30^(@)