" (iii) "cos theta+sec theta=(5)/(2)

Choose the correct answer in each of the following questions: If (cos theta + sec theta) =(5)/(2) " then " (cos^(2)theta + sec^(2)theta)=?

( sin theta + " cosec " theta )^(2) + ( cos theta + sec theta )^(2)=

(sin theta+sec theta)^(2)+(cos theta+csc theta)^(2)=(1+cos ec theta sec theta)^(2)

(sin theta+sec theta)^(2)+(cos theta+cos ec theta)^(2)=(1+sec theta cos ec theta)^(2)

Prove that (1+ cot theta + tan theta ) ( sin theta - cos theta) = (sec theta )/(cosec^(2) theta) - (cosec theta)/(sec^(2)theta) .

If sec theta + cos theta=(5)/(2) , then calculate the value of (sec theta-cos theta) .

If sec theta =(5)/(4),"find the value of "((2cos theta - sin theta ))/((cot theta - tan theta ))=.