Estimate the measure of ZBCD to the nearest 10°.

Q: Calculate cos(-628°)

A: Use the trigonometric identity, cos-x=cosx                ...(1)cos2×3600-x=cosx…

Q: 3 8.

A:

Q: Calculate the seventh Sine value and the seventh Sine

A:

Q: Convert - 285° into radians as a decimal.

A: Convert -285° into radians as a decimal.

Q: What is the value of "a"

A:

Q: x/3  radians is equivalent to 60°. True   False

A: Given that x/3  radians is equivalent to 60°.

Q: A 25-inch-long pendulum swings through an angle of radians.

A: The formula one have to use here is s=rθ where r is the length of the pendulum and θ is the angle in…

Q: Calculate mcADC 1705m 27° 19.6m

A:

Q: If alpha= -163 degrees and beta =31 degrees, what is the measure of theta?

A: Given:

Q: Determine the reference angle of -5π/6

A:

Q: Which has the largest angular diameter in the sky-the Sun or Moon during an annular eclipse?

A: Solar eclipses occur during new moon day when moon is positioned between earth and sun.

Q: Find the reference angle for radians 11x 5

A:

Q: Find the exact value of sec30°.

A:

Ratios

A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.

Trigonometric Ratios

Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.