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How do I solve this? 1. If csCA = 3 where angle is in QI and tanB = -7 where B is in QII, find sin(A + B) 2. If sin @ = - where angle is in QIII find (Show your steps) b COS sin(20)
Let sin A = - 15 17 with A in QIII and find the following. sin 2A 240 161 Need Help? Read It Talk to a Tutor
2. Find exact values for sin(20), cos(20), tan(20) using the information given. (a) cos(6) = -2; in QII (b) tan(8) = in QIII (c) sin(Ⓡ) = .in QIV
A forecaster used the regression equation Qt = a + bt + C1D1 + c2D2 + c3D3 and quarterly sales data for 19981-20161V (t = 1, ...,72) for an appliance manufacturer to obtain the results shown below. Q is quarterly sales, and D1, D2, and D3 are dummy variables for quarters I, II, and III. DEPENDENT VARIABLE: QT R-SQUARE P-VALUE ON F OBSERVATIONS: 72 0.8798 122.547 0.0001 PARAMETER STANDARD VARIABLE ESTIMATE ERROR T-RATIO P-VALUE INTERCEPT 36 12.54 2.87 0.0055 2.5...
For the following, assume that all the given angles are in simplest form, so that if A is in QIV you may assume that 270° < A < 360°. If sin B = −1/3 with B in QIII, find the following. cosB/2
#35 please - with B in QIII, find the following. M18032. C w ereldong animolla til uova 34. s 36.
Quadrant(s) in which y = sin x decreases and y = cos x increases. Check all 1 point that apply. * OQI Q11 000 1 point Quadrant(s) in which y = cos x is BOTH increasing and negative. Check all that apply. * OQI O QUI O QIII O QIV Quadrant(s) in which y = tan x is BOTH increasing and negative. Check all that apply. * 1 point OQI O QUI O O O QIII QIV O 1 point...
Find the exact value of the expression. sin (30) sin(90°) - cos (30) cos(90°) = Find the exact value of the expression. sin( – 45° ) sin( - 30°) = [ Write each expression as a single trigonometric function. sin(7x)cos(3x) – cos(7:c )sin(32) = Write each expression as a single trigonometric function. cos(6.c )cos(3x) - sin(62) sin(30) = Write each expression as a single trigonometric function. cos(7x)cos (4:0) + sin(78) sin(4x) =
4. If tan0 = 3 with in QI, find the following: (a) sin 20 (b) csc 20 5. If cos e = with @ in QIV, find the following. (a) sin, (b) cos
Find the expression that is equivalent to sin 70° cos 30° + cos 70° sin 30° Choose the correct answer below. O O O O cos 100° sin 100 cos 40° sin 40°