4. Find the exact value of each expression without using a calculator. Show your work. cos 70° cos 20° (a) tan 20° (b) 1- cos? 50° – cos? 40°

Q: Find the exact value of the expression. 15 cos tan 8 12 Cos 13

A: Given expression costan-1158-cos-11213. The objective is to find the exact value of the expression.

Q: Use a calculator to find the following values: sin(0.3) cos(0.3) tan(0.3)

A: our objective is to find the values.

Q: Find each value of θ in degrees (0° < θ < 90°) and radians (0 < θ < π/2) without using a…

A: The angle  for which cosine gives a square root of 2 is 45 degrees (standard result) Also tangent of…

Q: Find the exact value of each expression.

A: Given, y=tancos-1-32 or tancos-132 now find value of given expression we know, cosπ6=32 π6=cos-132…

Q: Give the exact value of the expression without using a calculator. 12 -1 + tan COS tan

A: Please consider the handwritten solution.

Q: Find the exact value of the expression sin 100° cos 40° − cos 100° sin 40°

A: According to the sine difference formula, . This formula can be used to obtain the value of the…

Q: Give the exact value of the expression without using a calculator. 12 8 -D1 COS tan -1 + tan 15 12 8…

A: Use the inverse trigonometric formula, tan-1x+tan-1y=tan-1x+y1-xy So,…

Q: 4. Use your calculator to determine which value is greater in each pair. c. sin 48° or 2(s a. sin…

A: Solution Question 4(a) and 4(b) Given, sin36o  or  cos54o  cos89o or  sin1o   We have to find the…

Q: Evaluate the expression cos(0 – 6) if cos e = }, 0 is in quadrant IV, tanó = -V3, and o is in…

A:

Q: (1) Find a simplified expression for cos tan' Ton

A: We are given                      .

Q: find the exact value of each expression.

A:

Q: Find the exact value of each expression given in attachment.

A: Given,costan-143+cos-11213

Q: Evaluate the expression without using a calculator. (cos 30°)2 − (sin 30°)2

A:

Q: Find the exact value of each expression given in attachment.

A:

Q: Find the exact value of each expression.

A: Given :                The trigonometric expression is…

Q: 8. Find the exact value of each expression. 3V34 tan cos 34

A: Solved below

Q: 1. Calculate each value, and draw a version of the Most Important Diagram that demonstrates your…

A: As per the instruction, we are answering only the first 3 subparts. For (a), arccos-12=2π3 Note:

Q: Find the exact value of each expression

A: We expression cos[2tan-1(-43)] Let  y = cos2tan-1(-43) To find the value of this expression Let…

Q: Find the exact value of each expression.

A: Find the exact value of each expression. let tan-143=x⇒tan x=43here, perpendicular=4 , base=3using…

Q: Find the exact value of the given expression without using a calculator. 23n tan -- 4

A: The solution is :

Q: Find the exact value, without a calculator. 9, 7n sin tan 12 Cos [ ? ] + /[ Enter

A:

Q: cos(?/2−?)=10/11, find tan⁡(?)

A:

Q: 10. Find the exact value of each expression, if it is defined. (a) tan1 (b) сos (c) tan (tan 37) (d)…

A: arctan1=π4  Decimal:0.78539…Degrees:45∘

Q: your calculator and compute to 4 decimal places (a) cos(22°) Use (b) tan(/3) (c) csc(40°)

A:

Q: Find the exact values of the following and simplify. Indicate if an expression is undefined. Do not…

A: Solve the expression as follows.

Q: Find each value of 0 in degrees (0° < 0 < 90°) and radians (0 < 0 < x/2) without using a calculator.…

A: a) 0°&lt;θ&lt;90° (Degrees) and 0 &lt;θ&lt;π2(Radians)     tan(θ)=3∴ θ= tan-1(3)∴ θ=…

Q: Find the exact value of each expression.

A: We have to find the exact value of the following expression -  tansin-145 + cos-11

Q: Find the exact value of each expression. sin 1 (a) 2 cos(-) (b) COS 2 tan (1) (c)

A: we know that Range  of sine inverse function is[-pi/2,pi/2]. sin(pi/3)=sqrt3/2 and value of sine…

Q: Use a calculator to find the value of each expression rounded to two decimal places .

A: To find cos-123

Q: Use a calculator to find the value of the expression cos-1 √5/ 7 rounded to two decimal places.

A: Given:cos-157

Q: 2) Use a calculator to find the value of each expression rounded to tow decimal places. a. cos-1 0.6…

A: To find the value of  cos-1(0.6)  and  tan-1(-3.27) to two decimal places.

Q: B) If Tan0 = 20 find without using tables the values of (cose, cot0 and csce) 15

A: Given that  tanθ=2015 To find the values of cosθ, cotθ, cscθ.

Q: If cos 210°=-√3/2,find the value of tan105°

A: We know that : cos2θ=1-tan2θ1+tan2θ or, tan2θ=1-cos2θ1+cos2θ. Here given that θ=105° .

Q: 3. Find the exact value of the expression using reference triangles. sin (csc-15 Cos-

A:

Q: Evaluate the expression without using a calculator. sin 30° cos 60° + sin 60° cos 30°

A:

Q: Simplify without a calculator: 2 sin(15°)cos(15°) I| ||

A: answer = ?

Q: Find each value of 0 in degrees (0° < 0 < 90°) and radians (0 < 0 < T/2) without using a calculator.…

A:

Q: 37 cos COS 16 sin -sin - 16 16 16

A: Here given expression Use the formula of the compound angle as

Q: Use a calculator to find an approximate value (in radians) of the expression rounded to five decimal…

A: The given value,tan-1(4)

Q: Find the exact value of the given expression, without using a calculator. safe ) 3 sin cos

A:

Q: If Tan A = 1, and Tan B = 35 , then find without using calculator the value of Tan (A + B).

A: given tanA =1 tanB = 35  To find tan(A+B)

Q: Find the exact value of the expression, if possible. (If not possible, enter IMPOSSIBLE.)…

A:

Q: Evaluate without using a calculator. tan(cos−1 9/15)

A:

Q: 1. Find the EXACT value of the following. DO NOT use a calculator. cos 195 b. sin cos - cos sin

A:

Q: Assume that 0≤?≤?/2. Find the values of sin(?)sin⁡(θ) and tan(?)tan⁡(θ) if cos(?)=40/41

A: Topic:- trigonometry ratios

Q: If cos A = - 15/17 and sin A < 0, what is the value of tan A?

A: Given Cos A=-1517 Since, in right angled triangle by Pythagorean theorem we have: a2+b2=c2 where,…

Q: Find the exact value of the given expression, without using a calculator. 12 Cos tan

A:

Q: Find the exact value of each expression. 4 + arccos 3 8 (1) tan ( tan 17 7 (2) sin? sin¬! 25

A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.