SECTION D
35. Prove that 1+sino/cos. + cos8/1+sino. =2seco
36.solve the quadratic equation by factorie
Answers
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Step-by-step explanation:
LHS=
cosA
1+sinA
+
1+sinA
cosA
=
(1+sinA)cosA
(1+sinA)
2
+cos
2
A
=
1+sinA
1+2sinA+sin
2
A+1−sin
2
A
=
(1+sinA)cosA
2(1+sinA)
=2secA
=RHS
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