Verify the following:`(frac(tan60^@+sec60^@)(tan60^@-sec60^@))=-(7+4sqrt3)`

Verify the following: (frac(1+tan45^@tan60^@)(tan45^@-tan60^@))=(frac(1+sqrt3)(1-sqrt3))

Select and write the correct answer from the given alternatives in each of the following: (frac(1-tan^2 60^@)(1+tan^2 60^@)) =………….

Evaluate each of the following sin30^@+sec30^@xxtan60^@

Using tables evaluate the following (frac(1-cot^2 60^@)(1+cot^2 60^@))-cos 60^@

cot 60^(@) =

Prove the following: (frac(2cos2A+1)(2cos2A-1))=tan(60^@+A)tan(60^@-A)

Evaluate each of the following cos30^@xxcot30^@-sec60^@

tan20^@tan40^@tan60^@tan80^@=

Prove the following: tanA+tan(60^@+A)+tan(120^@+A)=3tan3A

Using tables evaluate the following 4/3tan^3 60^@+3cos60^@-2sec^2 30^@-3/4cot^2 60^@