State a trigonometric ratio which is equivalent to each of the following trigonometric ratios. 1. sin 3pi/10 2. -sin 13pi/7 3. cos 6pi/7 4. -cos 8pi/7

Q: Divide the angle sin 45 by 0.3 Sin 45 0.3

A:

Q: Evaluate tan (315°) + sin (150°) =

A: To find:- tan315°+sin150°

Q: Find the other five trigonometric ratios of 0. cos 8 = tan 8 = csc e = sec e = cot 8 =

A: Given: Triangle has acute angle sin θ=513

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

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

Q: COS Z Y 36 15 39 Z.

A: Given diagram is CosZ=?

Q: Calculate using 4 decimal places for the sin ratio. Two surveyors stand a distance of 180m apart…

A: Assume the position of the surveyor A to be A, surveyor B be B and flag be C. Refer the figure forth…

Q: Find the measure of cos-1 (-0.5) in degrees and radians.

A: cos-1-0.5

Q: 3. Evaluate without calculator a. cos 120 degree. b. sec (pi/3) c. cot ( 19 pi / 6)

A:

Q: 1 200 -1 1 What is the value of the -coordinate of point A?

A:

Q: A 37 35 12

A:

Q: In the diagram, AFED tan D = is a right triangle. If 15 cos D E 8. D , which ratio equals

A:

Q: sin A 32 40 24

A:

Q: 4T Find the reference angle for - |radians

A: The solution is given below.

Q: tan Z 35 21 28

A: We will use the definition of trigonometric ratios to find the required trigonometric ratio

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.