evaluate cos^2 25+cos^2 65/sin^2 39+sin^2 51 + sin^2 30
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Answer:
Explanation:
From property of complement arcs -->
sin (65) = sin (90 - 25) = cos (25)
sin
2
(
25
)
+
sin
2
(
65
)
=
sin
2
(
25
)
+
cos
2
(
25
)
=
1
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