Evaluate each of the following`2cos30^@-sin270^@+(1)/(3)cos180^@`

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

Evaluate each of the following cos0^@xxtan60^@+cot30^@

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

Evaluate each of the following: sin30^@+cos45^@+tan180^@

Select and write the correct answer from the given alternatives in each of the following: tan180^@ x sin270^@ + sin90^@ =……….

Select and write the correct answer from the given alternatives in each of the following: |(sin^2 x,cos^2 x,1),(cos^2 x,sin^2 x,1),(-10,12,2)| =