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DRDO Multi tasking staff Model paper 9
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© examsnet.com
Question : 91
Total: 100
If
tan
θ
1
,
sin
θ
2
=
1/
√
2
,then the value of sin
(
θ
1
+
θ
2
)
equal to:
-1/2
-1
1
1/2
Validate
Solution:
⇒
tan
θ
1
=
1
⇒
tan
θ
1
=
tan
45
⇒
θ
1
=
45
⇒
sin
θ
2
=
1/
√
2
⇒
sin
θ
2
=
sin
45
°
⇒
θ
2
=
45
°
∴
sin
(
θ
1
+
θ
2
)
=
sin
(
45
°
+
45
°
)
=
sin
90
°
=
1
© examsnet.com
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