Math, asked by adityamandwekar342, 1 year ago

If sin 3 theta = cos(theta-26).Find theta and sin theta =1/3 find 2cot²theta +2.

Answers

Answered by uttkarshsingh450
3

sin3Ф = cos(Ф-26)                                    sinФ = 1/3

cos(90-3Ф) = cos(Ф-26)                           = 2cot^2Ф + 2        (B^2 = H^2 + P^2)

90-3Ф = Ф-26                                           = 2(2√2/1)^2 + 2    ( B = 2√2)

90+26 = Ф +3Ф                                        = 2(8/1)^2 + 2

116 = 4Ф                                                    = 16+2

Ф = 116/4                                                   = 18

Ф = 29


adityamandwekar342: Thanks bro
Answered by sohanafajil83
1

Step-by-step explanation:

sin3theeta=cos(theeta-26°)

cos(90°-3theeta)=cos(theeta-26°)

90°-3theeta=theeta-26°

90°+26°=3theeta+theeta

116°=4theeta

theeta=116°/4

theeta=29°

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