Yahoo Answers: Answers and Comments for Geometry help....? [Other  Science]
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From S.K.D
enUS
Mon, 20 May 2019 17:08:04 +0000
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Yahoo Answers: Answers and Comments for Geometry help....? [Other  Science]
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https://answers.yahoo.com/question/index?qid=20190520170804AAPLeTC
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From Krishnamurthy: Let altitude AD of acute angled triangle ABC b...
https://answers.yahoo.com/question/index?qid=20190520170804AAPLeTC
https://answers.yahoo.com/question/index?qid=20190520170804AAPLeTC
Mon, 20 May 2019 17:33:57 +0000
Let altitude AD of acute angled triangle ABC be produced
which meets its circumcircle at P such that AP = 4.
If circumradius of triangle is 2 root w then find the value of sec (B  C)

From Indica: ∠BPA=∠C, ∠BAP=π/2−B hence ∠ABP=π/2+B−C
Sine R...
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https://answers.yahoo.com/question/index?qid=20190520170804AAPLeTC
Mon, 20 May 2019 17:19:06 +0000
∠BPA=∠C, ∠BAP=π/2−B hence ∠ABP=π/2+B−C
Sine Rule to ΔABP : 4/sin(π/2+B−C) = 2R = 4√2 ⟹ cos(B−C) = 1/√2 ⟹ sec(B−C) = √2