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Find the value of

14 sin 30° + 6 cos 60° - 5 tan 45°

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If sin ( A+B)= cos ( A-B)= √ 3 / 2

Then A = ___ B = _____

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If 2 cos 3A = 1 then find the value of A = _____ and the sec 3A = ____

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If A = 60° and B = 30° then find the value of

sinA cosB - cos A sinB - sin B

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If 2 cos(3x-15) = 1

find the value of x

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Find value of

3 sin² 30° + 2tan² 60° - 5 cos² 45°

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If A= 30° find the value of

4 cos³ A - 3 cos A - cos 3A

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If (sec A - 2) ( tan 3 A - 1) = 0

Then value of A = ____ or ______