Question

trignometry identites

Answer 1

sinX*sinX+cosX*cosX=1
secX*secX-tanX*tanX=1
cossecX*cossecX-cotX*cotX=1
tanX=sinX/cosX
cotX=1/tanX=cosx/sinX
cossecX=1/sinX
secX=1/cosX
sin(90-X)=cosX
cos(90-X)=sinX
sinX*cossexX=1
tanX*cotX=1
cosX*secX=1
tan(90-X)=cotX

Answer 2

• sin²∅ + cos²∅ = 1
• 1 + tan²∅ = sec²∅
• 1 + cot²∅ = cosec²∅

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