Q.1)if α,β,γ,δ are the smallest positive angles in ascending order of magnitude which have their sines equal to the positive quantity k, the 4sin1/2α+3sin1/2β+2sin1/2γ+sin1/2δ is equal to?Q.2)If m sinθ = n sin(θ+2α), then value of tan(θ+ α)cot α is equal to ?Q.3)3)the only value of x for which 2^sinx+2^cosx>=2^1-(1/√2) hold, is?

Russel , 8 Years ago

Grade 11