11. Prove each identity. h) csc 2x + cot 2x = cot x 2 tan x i) 1 + tan´ x sin 2x 2 CSc t j) sec 2t = CSc t- 2 sin t 1 k) csc 20 sec 0) ( csc t) 2 %3D f) cot 0 + tan 0 = 2csc 20 1 + tan x TT sin 2t Cos 2t = tan 1) sec t = tan x 4 sin f COs t

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A: Since you have posted a multiple question according to guildlines I will solve first question for yo...

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Q: 2. It is desired to obtain the real-valued roots of S(2) = 0, f(z)= (x*. 8. - 6z - 5z2 + 6r - 4VT+10...

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Q: -, first prove that )" 6.

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Q: . Scores of students in a mathematics test 82 75 92 96 78 82 77 88 90 95 85 86 Q, = Q, =

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