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Sum of Trigonometric Ratios in Terms of Their Product

Find the valu...

Question

Find the value of $s i n^{2} 45^{o} + c o s^{2} 45^{o}$ .

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Solution

We know that, $s i n^{2} θ + c o s^{2} θ = 1$
$∴ s i n^{2} 45^{o} + c o s^{2} 45^{o} = 1$

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Sum of Trigonometric Ratios in Terms of Their Product

Standard XII Mathematics

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