1. Show how to find the following w/out using a calculator. A. Sin(59pi/4) B. Co
ID: 3015167 • Letter: 1
Question
1. Show how to find the following w/out using a calculator. A. Sin(59pi/4) B. Cos(127pi/6) 2. Use Pythagorean identity for the following: If sinø=8/9, ø is a QII angle find cosø (delta) 3. Find the linear speed and angular velocity of a particle that makes 0.75 revolutions per second around a circle of radius 7 meters. 4. A sector of a circle has a central angle of 40°, if the circle has radius 3ft, what is the area of the circle? 1. Show how to find the following w/out using a calculator. A. Sin(59pi/4) B. Cos(127pi/6) 2. Use Pythagorean identity for the following: If sinø=8/9, ø is a QII angle find cosø (delta) 3. Find the linear speed and angular velocity of a particle that makes 0.75 revolutions per second around a circle of radius 7 meters. 4. A sector of a circle has a central angle of 40°, if the circle has radius 3ft, what is the area of the circle? 1. Show how to find the following w/out using a calculator. A. Sin(59pi/4) B. Cos(127pi/6) 2. Use Pythagorean identity for the following: If sinø=8/9, ø is a QII angle find cosø (delta) 3. Find the linear speed and angular velocity of a particle that makes 0.75 revolutions per second around a circle of radius 7 meters. 4. A sector of a circle has a central angle of 40°, if the circle has radius 3ft, what is the area of the circle?Explanation / Answer
A. sin (59 pi/4) = sin(14 pi + pi/4)= sin pi/4=sqrt2/2
B. cos(127pi/6)=cos (21pi + pi/6)= - cos pi/6=-sqrt3/2
C. sin theta=8/9
In second quadrant cosine is negative
adjacent=sqrt(81-64)=sqrt17
cos theta=-sqrt17/9
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