Establish the identity.cos
= -sin ?
What will be an ideal response?
cos 
= cos 
cos ? + sin 
sin ? = 0 ? cos ? - 1 ? sin ? = - sin ?
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Provide an appropriate response.Suppose the velocity of a body moving along the s-axis is 
= 9.8t - 3.Find the body's displacement over the time interval from 
to 
given that 
when 
A. 4 B. 208 C. 39.2 D. 184
Use the given trigonometric function value of ? to find the requested trigonometric function value of the acute angle ?. Rationalize the denominators where necessary.csc ? = 
Find sin ?.
A. -7
B. 
C. 7
D. - 
Multiply the polynomials using the FOIL method. Express the answer as a single polynomial in standard form.(2x + 7y)(3x - 4y)
A. 6x2 + 13xy + 13y2 B. 6x2 - 8xy - 28y2 C. 6x2 + 13xy - 28y2 D. 6x2 + 21xy - 28y2
Find the magnitude of the vector v described below. Initial point: (-4, -3, 3) Terminal point: (8, 2, -6)
A. 
B. 26
C. 
D. 0
E. 