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Maths CBSE Mentoring
Class 10 Mentoring product
Introduction to trigonometry
Problems based on trigonometric identities and values
2.
Verify the given trigonometric equation
Question:
5
m.
Answer variants:
1
+
sin
β
2
1
+
sin
2
β
1
+
sin
β
1
−
sin
β
×
1
+
sin
β
1
+
sin
β
1
+
sin
β
1
−
sin
β
×
1
−
sin
β
1
−
sin
β
1
+
sin
β
cos
β
1
cos
β
+
sin
β
cos
β
1
+
sin
β
2
1
−
sin
2
β
1
+
sin
β
2
cos
2
β
Verify that
1
+
sin
β
1
−
sin
β
\(=\)
sec
β
+
tan
β
.
Proof
:
LHS \(=\)
1
+
sin
β
1
−
sin
β
\(=\)
\(=\)
\(=\)
\(=\)
\(=\)
\(=\)
sec
β
+
tan
β
\(=\) RHS
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