Evaluate each of the following

sin 45° sin 30° + cos 45° cos 30°

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Solution

We have,

…… (1)

Now

So by substituting above values in equation (1)

We get,

Therefore,

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Similar questions

Evaluate each of the following

sin $45^{o}$ sin $30^{o}$ + cos $45^{o}$ cos $30^{o}$

s i n 30^{\circ} c o s 45^{\circ} + c o s 30^{\circ} s i n 45^{\circ}

c o s 30^{\circ} c o s 45^{\circ} - s i n 30^{\circ} s i n 45^{\circ}

s i n 60^{\circ} c o s 30^{\circ} + s i n 30^{\circ} c o s 60^{\circ}

\frac{c o s 45^{\circ}}{s e c 30^{\circ} + c o s e c 30^{\circ}}

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