Question

Cos^2x+(tan^2x)(cos^2x)

Answer 1

Explanation:
cos
2
+
tan
2
cos
2
x
=
cos
2
+
sin
2
x
cos
2
x
×
cos
2
x
=
cos
2
+
sin
2
x
cos
2
x
×
cos
2
x
=
cos
2
+
sin
2
x
=
1


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Answer 2

Hope you could understand.

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