[" 6.Pio sta ea "1],[qquad [" (i) "cosec'67^(@)-tan^(2)23^(@)]]

Find the value of ("cosec"^(2)A-1)*tan^(2)A .

Find the value of ("cosec"^(2)A-1)*tan^(2)A .

Without using Trigonometric Tables evaluate the following :- (cosec^2 67^@-tan^2 23^@)/(sin^2 17^@+sin^2 73^@)+(sin59^@)/(cos31^@) .

cosec 23^@ - sec 67^@

( Sec^2 theta - cot ^2 (90 - theta))/( cosec ^2 67^@ - tan ^2 23^@) + sin ^2 40 ^@ + sin ^2 50^@ is equal to

What is the value of (tan 9^(@) tan 23^(@) tan 60^(@) tan67^(@) tan 81^(@))/("cosec"^(2)72^(@)+cos^(2)15^(@)-tan^(2)18^(@)+cos^(2)75^(@))? (a) (1)/(2 sqrt(3)) (b) (sqrt(3))/(2) (c) (1)/(sqrt(3)) (d) 2 sqrt(3)

What is the value of ( cosec (78^(@) - theta) - sec ( 12^(@) + theta) - tan (67^(@) + theta) + cot (23^(@) - theta) )/( tan 13^(@) tan 37^(@) tan 45^(@) tan 53^(@) tan 77^(@) ) ?

Evaluate : (sec^(2)theta-cot^(2)(90^(@)-theta))/("cosec"^(2)67^(@)-tan^(2)23^(2))+(sin^(2)40^(@)+sin^(2)50^(@))

Evaluate : (sec^(2)theta-cot^(2)(90^(@)-theta))/("cosec"^(2)67^(@)-tan^(2)23^(2))+(sin^(2)40^(@)+sin^(2)50^(@))

The value of ("sin"23^(@)"cos"67^(@)"tan"45^(@)+"cos"23^(@)"sin"67^(@)"cot"45^(@))/(2"sin"45^(@)"cos"45^(@)) is: