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Question
Find the values of -
cos2 45° + sin2 30°
Sum
Solution
cos2 45° + sin2 30°
= `(1/sqrt2)^2 + (1/2)^2`
= `1/2 + 1/4`
= `[2 + 1]/4`
= `3/4`
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Trigonometric Ratios of 30° and 60° Angles
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