Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.9x-8/9z9/10
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the velocity vector.r(t) = (cot t)i + (csc t)j
A. v = (-csc2 t)i - (cot t csc t)j B. v = (csc2 t)i + (cot t csc t)j C. v = (sec2 t)i + (tan t sec t)j D. v = (-sec2 t)i - (tan t sec t)j
Mathematics
Use a calculator to find the value of the expression in radian measure rounded to two decimal places.cot-1 
A. 24.44 B. 65.56 C. 1.14 D. 0.43
Mathematics
Verify the identity.
= cot 
What will be an ideal response?
Mathematics
Solve the equation by finding an expression for the determinant on the left, and then solving using the appropriate method.
= -4
A. {16}
B. 
C. ?
D. {-4, 4}
Mathematics