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Maths CBSE Homework Assignments
Class 10
Introduction to Trigonometry
Prove tht the given expression
4.
Show the given trigonometric equation
Question:
5
m.
Answer variants:
cos
A
1
+
sin
A
1
+
sin
A
1
+
sin
A
cos
A
1
−
sin
A
cos
2
A
1
−
sin
A
cos
A
cos
A
1
+
sin
A
1
+
sin
2
A
cos
A
1
−
sin
A
1
+
sin
A
1
−
sin
A
cos
A
1
−
sin
A
1
−
sin
2
A
1
cos
A
−
sin
A
cos
A
Show that
cos
A
1
+
sin
A
\(=\)
sec
A
−
tan
A
.
Proof
:
LHS \(=\)
cos
A
1
+
sin
A
\(=\)
\(=\)
\(=\)
\(=\)
\(=\)
\(=\)
sec
A
−
tan
A
\(=\) RHS
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