8. In triangle PAN, angle A = 90, If
Sec P = 17/8, then the length of
AN is
О 5
O 6
O 14
O 15
Answers
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Step-by-step explanation:
OP2 = OM2 + MP2
⇒ OM2 = OP2 – MP2
⇒ OM2 = [(17k)2 – (8k)2]
⇒ OM2 = [289k2 – 64k2]
⇒ OM2 = 225k2
⇒ OM = √(225k2)
⇒ OM = 15k
Therefore, sin θ = MP/OP = 8k/17k = 8/17
cos θ = OM/OP = 15k/17k = 15/17
tan θ = Sin θ/Cos θ = (8/17 × 17/15) = 8/15
csc θ = 1/sin θ = 17/8
sec θ = 1/cos θ = 17/15 and
cot θ = 1/tan θ = 15/8.
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