Question

If 15 cot a = 8 then find sin a and sec a

Answer 1

15cot a = 8
cot a = 8/15
cot = adj/opp ===> 8/15
pythagoras thm,
hyp =root ( 8 + 15 )^2
hyp = root ( 64 + 225)
hyp = root (289)
hyp = 17

sin a = opp / hyp ====> 15/17
sec= hyp / adj =====> 17/8


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