[" 16cot "(45^(@)+theta)" cot "(45^(@)-theta)" का मान है "],[[" (a) "-1," (b) "0],[" (c) "1," (d) "oo]]

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

(cot2 theta-cot3 theta)/(cot theta) is equal to

cot(45+theta)cot(45-theta)= ..................... A) -1 B) 0 C) 1 D) oo

if theta = 45^(@) then sec theta cot theta - "cosec"theta is:

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^(@))

Prove that cot theta + cot (60^(@) theta) + cot (120^(@) + theta) = 3 cot 3 theta .

Prove that: cot theta+cot(60^(@)+theta)+cot(120^(@)+theta)=3cot3 theta

The value of the expression (cos^(6)theta + sin^(6) theta – 1) (tan^(2) theta + cot^(2) theta + 2) is: समीकरण (cos^(6)theta + sin^(6) theta – 1) (tan^(2) theta + cot^(2) theta + 2) का मान है:

If "cot" theta "cot" 7 theta + "cot" theta "cot" 4 theta + "cot" 4 theta "cot" 7 theta = 1, " then" theta =