7sin²A+ 4cos²A=4 then fin the value of tanA
Answers
Answered by
1
Answer:
7sin^2a +4(1-sin^2a)= 4
7sin^2a + 4 -4sin^2a = 4
3sin^2a = 0
a = 90°
tan(90°) = undefined
Answered by
0
Answer:
3sin²A+4sin²A+ 4cos²A=4
∴sin²A = 0
∴sinA = 0
∴ tanA = 0
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