Find the values for tan `90^(@) ,cosec 90 ^(@) , sec 90 ^(@) and cot 90 ^(@) `

Find the values of cosec 60 ^(@) ,sec 60^(@) and cot 60^(@)

Find the values of sin 30^(@) ,cos 30 ^(@) ,tan 30 ^(@) ,cosec 30^(@) ,sec 30 ^(@) and cot 30^(@)

Find the values of sec 240^@ , tan 750^@ , cosec 300^@ .

Find sec 16^(@) cosec 74^(@) -cot 74^(@) tan 16^(@)

Assertion (A) : tan 70^(@) - tan 20^(@) = 2 cot 40^(@) Reason (R ) : If A + B = 90^(@) then tan A. tan B = 1

Find the slope of a line whose inclination is 90^@

If tan theta = -(5)/(12) and theta is not in the fourth quadrant then ( tan (90^(@)+ theta ) - sin(180^(@) - theta ))/( sin (270^(@)- theta ) + " cosec " (360^(@) - theta ))=

If angle C = 90 ^(@) ," then " 2(r + R) =