Trigonometry

Sin A cos B – cos A sin B is equivalent to:

• cos (A - B)

• sin (A - B)

• tan (A - B)

• cos 2 (A - B)

The angular distance of a point on the terrestrial sphere from the north pole is called

• Coaltitude

• Latitude

• Altitude

• Codeclination

Csc 520° is equal to

• cos 20°

• csc 20°

• tan 45°

• sin 20°

What is the sine of 820°?

• 0.984

• 0.866

• -0.866

• -0.5

The logarithm of the negative number is

• Imaginary

• Irrational

• Real

• Rational

The sum of the squares of the sine and cosine of an angle

• 0

• 1

• 2

• 3

The logarithm of a number to the base e (2.7182...) is called

• Napierian logarithm

• Characteristic

• Mantissa

• Briggsian logarithm

The characteristic is equal to the exponent of 10, when the number is written in

• Exponential form

• Scientific notation

• Logarithmic form

• Irrational number

Naperian logarithms have a base closest to which number?

• 2.72

• 2.82

• 2.92

• 10

The logarithm of 1 to any base is

• Indeterminate

• Zero

• Infinity

• One