Math, asked by riyasaroha4877, 1 year ago

if cot(alpha + beta) = 0, then find the value of sin(alpha + 2 beta)

Answers

Answered by saxenavs
123
cot (alpha+beta)=cot90
then,
alpha+beta=90
alpha=90-beta
put in sin (alpha+2 beta)
now,
sin (90-beta+2 beta)

sin (90+beta)
therefore cos(beta) will be your answer
mark me a brainlist
Answered by PanditAbhishek
76
Given that - 
                          cot (α+β) = 0
                 We have to find sin(α+2β)
                          cot (α+β) = 0
                          We know cot 90° =0    
                              α+β  =90
                               β = 90-α
                       
                          sin (α+2β) = sin(α+2(90-α))
                                          = sin (180-α)
                                          = sin(α)        Answer
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