Sec A + Tan A = 3 => Sec A =1) 10/3 2) 5/3 3) 2/3 4) 4/3
Vyanktesh Kulkarni , 8 Years ago
Grade 8
Trigonometry> Sec A + Tan A = 3 => Sec A =1) 10/3 2) 5/...
1 Answers
manna
Last Activity: 8 Years ago
1+sinA/cosA=3
1+sinA=3*cosA
1+sinA=3(I'll rewrite 
as 
Squaring both sides,
Let u=sinA. It is easy to see that we can now obtain a quadratic:
--> 
sinA=4/5
cosA=3/5
sec=1/cos=5/3
answer is sec =5/3
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