AP EAMCET Engineering 2018 Apr 23 Shift 2 Paper

Section: Mathematics

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Question : 21 of 160

Marks: +1, -0

If cosA−

7

25

and

3π

2

< A > 2π then cos‌

A

4

+cos‌

A

2

−cos‌2‌A=

1
√10
+
27
625
3
√10
−
27
625
3
√10
+
27
625
1
√10
−
27
625

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