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Improper Integrals

40.Express in...

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40.Express in terms of the ratios of a positive angle, which is less than 45^° , the quantities(a) sin 168"

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Q. Express the following in terms of trigonometric ratios of angles lying between 0 and 45:

sin 67^{0} + cos 75^{0}

sin 81^{o} + tan 71^{o}

in terms of trigonometric ratios of angles between

0^{o}

45^{o}

Express sin 67° + cos 75° in terms of trigonometric ratios of angles between 0° and 45°.

Q. Express the following in terms of trigonometric ratios of angles lying between 0 and 45:

cosec 54^{0} + sin 72^{0}

Q. Question 7
Express

s i n 67^{\circ} + c o s 75^{\circ}

in terms of trigonometric ratios of angles between

0^{\circ}

45^{\circ}

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