18. In the right triangle below, find cos A. B 9 A 40 41 C 40/41 9/40 9/41 41/9 below find sin A.

Q: 1. From the list below find the expression, identical for the given. cos 68 Select the correct…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: 2. Identify each of the following polar equations and state the correct graph: a. r 2-2 cos 0 i. ii.…

A:

Q: A 5 4 B 3 C

A: Given :

Q: 2. Find sin 0 and tan 0 if cos O = 3 and Ois in quadrant III. Use exact answers.

A: Given that  costheta =-3/8 To find the sin and tan

Q: Suppose cos ? =15/17 and ? lies in the 4th quadrant. Choose one of those ways to find sin ?.

A: Solution is in step 2

Q: 1 Cos A - 1 with Ain QIV Find cot2A. V5 2. b. 3. C. 2. d. 4 E. e. 4

A:

Q: Which of the following are true? A. sin? + cos2 := 2 B. sin? 20 + cos? 20 = 2 C. sec2 - tan? = 1 D.…

A:

Q: 77. From the figure, show that sin(45° – a) = sin95°. A 40° 12 8 45° D C B

A: The given figure is, In triangle ACD,∠DAC=40°∠ACD=45°Using the angle sum property of a…

Q: Which of the following is an INCORRECT statement? a, sine and secO are both positive in the fourth…

A: We know that In 1st quadrant all trigonometric functions are positive   In 2nd quadrant sin and…

Q: What is cos(30°)? 30 2 V3 V[? cos(30°) COS Enter

A: We know that cos (theta)=opposite side/hypotenuse

Q: Use double angle identities to find values of the sine and cosine functions for each angle. Θ,…

A: The given angle is cos2θ=-512 and 90°<θ<180°. Simplify the given angle as follows.…

Q: Can someone help me to answer this ? Plssss.   Cos(5pi/4) and. Sin(5pi/4)

A: Find the value of cos(5pi/4) and sin(5pi/4). We know that: sin(π+x)= -sinx and cos(π+x) = -cosx.…

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.