(1+cosA)(1-cosA)=¾; find the value of secA
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Hey there u should understand from the image . thanks
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Answer:
sec A = 2
Step-by-step explanation:
1^2 - cos^2A=3/4
sin^2A=3/4
SinA=√3/2
A=60°
SecA=Sec60°=2
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