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 =

Write the Lewis dot structure of the nitrite ion (NO_(2)^(Θ)) .

Find the general solution of: Cos^2θ - Sinθ - 1/4 = 0

The value of sin (45° + θ) – cos (45° – θ) is (A) 2 cos θ (B) 2 sin θ (C) 1 (D) 0

a. Which alkali metal is used as a coolent in nuclear reactor ? b. What is the oxidation state of K in KO_(2) ? c. The E^(Θ) for CI_(2)CI^(Θ) is +1.36 , for I_(2)//I^(Θ) is +0.53 , for Ag^(o+)//Ag is +0.79 , for Na^(o+)//Na is -2.71 and for Li^(o+)//Li is -3.04 . Arrange the following ionic species in decreasing order of reducing strength. I^(Θ), Ag, CI^(Θ), Li, Na d. Why is KO_(2) is paramagnetic ?

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 :

If θ is an acute angle and sinθ=cosθ, find the value of 2tan^2θ+sin^2θ−1.

(sinθ - 2sin^3θ)/(2cos^3θ - cosθ) = tanθ

Write the resonance structure of NO_(2)^(Θ) (nitrite) and NO_(3)^(Θ) (nitrate ion) .

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 ​ ?

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