Evaluate `(2tan45^@ xx cos 60^@)/sin30^@`

Evaluate : (tan45^(@))/(2sin30^(@)-cos60^(@))

Evalutate: [{:(,2cos 60^@, -2sin 30^@),(,-tan 45^@,cos 0^@):}] [{:(,cot 45^@, cosec 30^@),(,sec 60^@, sin 90^@):}]

using trigonometric tables evaluate the following : (cot 30^(@))/(sec 30^(@)) + ("cosec 30"^(@))/(tan 45^(@)) - (2 cos 0^(@))/(sin 30^(@)) + cos^(2) 45^(@)

Evaluate the following (i) sin 60^@ cos30^@ + sin 30^@ cos 60^@ (ii) 2tan^2 45^@ + cos^2 30^@ - sin^2 60^@ (iii) (cos45^@)/(sec30^@ + c o s e c 30^@) (iv) (sin30^@ + tan45^@ - c o s e c 60^@ )/(sec30^@ + cos60^@ +cot45^@) (v) (5cos^2 60^@ + 4sec^2 30^@ - tan^2 45^@ )/ (sin^2 30^@ + cos^2 30^@ )

Evaluate cos45^(@)cos30^(@)+sin45^(@)sin30^(@) .

Evaluate : [{:(,4 sin 30^@ 2 cos 60^@), (,sin 90^@ 2 cos 0^@):}] [{:(,4,5),(,5,4):}]

Evaluate : 2 sec 30^(@) xx tan 60^(@)

The valiue of sin60^(@) cos 30^(@) + sin 30^(@)cos 60^(@) is ______.

Evaluate : sin ^(2)60^(@)tan 45^(@)- cos^(2)45^(@)sec 60^(@)

Evaluate : 4(sin^4 30^0+cos^4 60^0)-2/3(sin^2 60^0-cos^2 45^0)+1/2tan^2 60^0