For Exercises 64-68, use the fundamental trigonometric identities as needed. Give that cos x ≈ 0.6691 , Approximate the given function values. Round to 4 decimal places. a. sin x b. sin π 2 − x c. tan x d. cos π 2 − x e. sec x f. cot π 2 − x
For Exercises 64-68, use the fundamental trigonometric identities as needed. Give that cos x ≈ 0.6691 , Approximate the given function values. Round to 4 decimal places. a. sin x b. sin π 2 − x c. tan x d. cos π 2 − x e. sec x f. cot π 2 − x
Solution Summary: The author calculates the value of mathrmsinx, rounded to 4 decimal places, by using fundamental trigonometric identities.
For Exercises 64-68, use the fundamental trigonometric identities as needed.
Give that
cos
x
≈
0.6691
, Approximate the given function values. Round to
4
decimal places.
a.
sin
x
b.
sin
π
2
−
x
c.
tan
x
d.
cos
π
2
−
x
e.
sec
x
f.
cot
π
2
−
x
Equations that give the relation between different trigonometric functions and are true for any value of the variable for the domain. There are six trigonometric functions: sine, cosine, tangent, cotangent, secant, and cosecant.
Use the information to find and compare Δy and dy. (Round your answers to four decimal places.)
y = x4 + 7 x = −3 Δx = dx = 0.01
Δy =
dy =
4. A car travels in a straight line for one hour. Its velocity, v, in miles per hour at six minute intervals is shown
in the table. For each problem, approximate the distance the car traveled (in miles) using the given method,
on the provided interval, and with the given number of rectangles or trapezoids, n.
Time (min) 0 6 12 18|24|30|36|42|48|54|60
Speed (mph) 0 10 20 40 60 50 40 30 40 40 65
a.) Left Rectangles, [0, 30] n=5
b.) Right Rectangles, [24, 42] n=3
c.) Midpoint Rectangles, [24, 60] n=3
d.) Trapezoids, [0, 24] n=4
The bracket BCD is hinged at C and attached to a control cable at B. Let F₁ = 275 N and F2 = 275 N.
F1
B
a=0.18 m
C
A
0.4 m
-0.4 m-
0.24 m
Determine the reaction at C.
The reaction at C
N Z
F2
D
University Calculus: Early Transcendentals (4th Edition)
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Fundamental Trigonometric Identities: Reciprocal, Quotient, and Pythagorean Identities; Author: Mathispower4u;https://www.youtube.com/watch?v=OmJ5fxyXrfg;License: Standard YouTube License, CC-BY