Question

Cosec (180-e) Cos(-o), _sec (180 +0) cos (90+0) =cot20
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Answer 1

Answer:

Formulae=

cos(90−θ)=sinθ

sin(90−θ)=cosθ

tan(90−θ)=cotθ

cot(90−θ)=tanθ

sec(90−θ)=cscθ

cosec(90−θ)=secθ

Step-by-step explanation:

= cos(90°+θ)sec(−θ)tan(180°−θ)/sin(360°+θ)sec(180°+θ)cot(90°−θ)

= sinθ.(−secθ)tanθ/−sinθ.secθ(−tanθ)

= -1

Hope it helps..