Math, asked by amaljyothi79, 5 months ago

value of Cot (A-90) and Sec(A-90)

Answers

Answered by prathamkotak1310

2

Answer:

cosec 45

mark brainliest...! hshs

Answered by sai172982

2

Answer:

cot(-x) =cosx/-sinx=-cotx

by above thing we can wt

cot(A-90) =cot(-(90-A)) =-cot(90-A) =-cotA

similarly do other

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