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Question
The value of sin2 29° + sin2 61° is
Options
1
0
2 sin2 29°
2 cos2 61°
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Solution
The given expression is `sin^29°+sin^2 61°`
`sin^2 29°+sin^2 61°`.
=` sin^2 29°+(sin 61°)^2`
`= sin^2 29°+{sin(90°-29°)}^2`
`=sin^2 29°+(cos 29°)^2`
`= sin^2 29°+cos^2°29°`
`= 1`
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