Evaluate each of the following - sin 60-cos2 45- - cot 30- - 15 cos 90-

We have, sin 60^∘cos^2 45^∘ cot 30^∘ + 15 cos 90^∘ = √(3)2(1/ √(2))^2 √(3) + 15 × 0 = √(3) √(3) + 0 = #160; 0 ...

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Circular Measurement of Angle

Evaluate each...

Question

Evaluate each of the following :
$\frac{s i n 60^{\circ}}{c o s^{2} 45^{\circ}} - c o t 30^{\circ} + 15 c o s 90^{\circ}$

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\frac{s i n^{2} 45^{\circ} + c o s^{2} 45^{\circ}}{t a n^{2} 60^{\circ}}

c o s e c^{3} 30^{\circ} c o s 60^{\circ} t a n^{3} 45^{\circ} s i n^{2} 90^{\circ} s e c^{2} 45^{\circ} c o t 30^{\circ}

Evaluate each of the following

$c o s^{2} 30^{o} + c o s^{2} 45^{o} + c o s^{2} 60^{o} + c o s^{2} 90^{o}$

\frac{1}{c o t^{2} 30^{\circ}} + \frac{1}{s i n^{2} 60^{\circ}} - c o s^{2} 45^{\circ}

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