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[" 92.What is the value of "],[(cos^(2)(45^(@)+theta)+cos^(2)(45^(@)-theta))/(tan(60^(@)+theta)tan(30^(@)-theta))],[" (1) "-1],[" (2) "0],[" (3) "1],[" (4) "2]

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What is (cos^(2)(45^(@)+theta)+cos^(2)(45^(@)-theta))/(tan(60^(@)+theta)tan(30^(@)-theta)) equal to ?

(1-tan^(2)(45^(@)-theta))/(1+tan^(2)(45^(@)-theta))=

Evaluate : (cos^(2)(45^(@) + theta)+ cos^(2) (45^(@) -theta))/(tan(60^(@) + theta) xx tan(30^(@) - theta))+(cot30^(@) + sin 90^(@))xx (tan60^(@) -sec0^(@))

Evaluate : (cos^(2)(45^(@) + theta)+ cos^(2) (45^(@) -theta))/(tan(60^(@) + theta) xx tan(30^(@) - theta))+(cot30^(@) + sin 90^(@))xx (tan60^(@) -sec0^(@))

Evaluate : (cos^(2)(45+theta)+cos^(2)(45-theta))/(tan(60^(@)+theta)tan(30^(@)-theta))+cos ec(75^(@)+theta)-sec(15^(@)-theta)

Evaluate : (cos^2(45 + theta) + cos^2(45 - theta))/(tan(60^@ + theta) tan(30^@ - theta)) + cosec(75^@ + theta) - sec(15^@ - theta)

What is the simplified value of (3)/(cosec^(2)theta)+(5)/(1+tan^(2)theta)-2cos^(2)theta ?

Write the value of sin^(2)theta cos^(2)theta(1+tan^(2)theta)(1+cot^(2)theta).

Prove that (2 cos 2 theta+1)/(2 cos 2theta-1)=tan(60^@+theta) (tan 60^@-theta)

If theta=45^(@) then (tan^(2)theta-1)/(sec^(2)theta)=