Prove that
`cos^2θ-cos^2θ . sin^2θ``=cos^4θ`

Sec^2θ + cosec^2θ = sec^2θ * cosec^2θ

A line makes angle θ 1 ​ ,θ 2 ​ ,θ 3 ​ ,θ 4 ​ with the diagonals of the cube. Show that cos^ 2 θ 1 ​ +cos^ 2 θ 2 ​ +cos^ 2 θ 3 ​ +cos^ 2 θ 4 ​ = 3/ 4 ​ ?

If cos^(2) θ - sin^(2) θ - 3cosθ +2 =0 , 0^circ lt θ lt 90^circ , then what is the value of 4cosecθ + cotθ ? यदि cos^(2) θ - sin^(2) θ - 3cosθ +2 =0 , 0^circ lt θ lt 90^circ , है तो 4cosecθ + cotθ का मान कितना है?

If cotθ = sqrt6 , then the value of is: (cosec^(2)θ + sec^(2)θ)/(cosec^(2)θ − sec^(2)θ) यदि cotθ = sqrt6 है तो (cosec^(2)θ + sec^(2)θ)/(cosec^(2)θ − sec^(2)θ) का मान हैः

Solve, integrate ∫ (dθ)/(sin^2θ * cos^2θ)

If 5sin θ – 4cos θ = 0, 0^circ lt θ lt 90^circ , then the value of (5sinθ− 2cosθ)/ (5 sin θ + 3cosθ) is: यदि 5sin θ – 4cos θ = 0, 0^circ lt θ lt 90^circ है, तो (5sinθ− 2cosθ)/ (5 sin θ + 3cosθ) का मान है:

If 2cos^(2)θ + 3sinθ = 3 , where 0^circ lt θ lt 90^circ , then what is the value of sin^(2)2θ + cos^2 (θ) + tan^(2)2θ + cos^(2) 2θ = ? यदि 2cos^(2)θ + 3sinθ = 3 , जहा 0^circ lt θ lt 90^circ तो sin^(2)2θ + cos^(2(θ + tan^(2)2θ + cos^(2)2θ का मान बराबर है :

Let S be the sum of all values of θ which satisfy the conditions 2 cos 2 θ + 3 sin θ = 0 and − 2 π ≤ θ ≤ 2 π .Then S =

The value of (sec^(2)θ /cosec^(2)θ) + (cosec^(2)θ /sec^(2)θ )-(sec^(2)θ + cosec^(2)θ) is : (sec^(2)θ /cosec^(2)θ) + (cosec^(2)θ /sec^(2)θ )-(sec^(2)θ + cosec^(2)θ) का मान बराबर है :

The number of different AP's whose first three terms are cos θ , (cos 2 θ)/ 2 , cos 3 θ is/are Question Type: single correct Type [ 1 . ) 0 ] , [ 2 . ) 1 ] , [ 3 . ) 2 ] , [ 4 . ) 3]