Sec A= 5/4 prove that sin A -2cos A /tan A -2cot A= 12/7
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sec A = 5/4 .......( sec = hypo / base)
let hypo be 5x and base be 4x then using phathgorous triplet the prependicular will be 3x
sin A = p/h = 3x/ 5x = 3/5
cos A= b/h = 4x/ 5x = 4/5
tan A= p/b = 3/4
cot A= b/p = 4/3
put the values and you will get your solution
let hypo be 5x and base be 4x then using phathgorous triplet the prependicular will be 3x
sin A = p/h = 3x/ 5x = 3/5
cos A= b/h = 4x/ 5x = 4/5
tan A= p/b = 3/4
cot A= b/p = 4/3
put the values and you will get your solution
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