Use the fundamental identities to find the value of the trigonometric function.Find cos ? if sin ? = - 
and tan ? > 0.
A. 
B. - 
C. - 
D. - 
Answer: B
Mathematics
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Estimate the sum or difference by first rounding each value to the indicated place value.34.78 + 145.1
round each to the nearest one
A. 180 B. 175 C. 170 D. 195
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. - 
C. - 
D. 
Mathematics
Evaluate.75
A. 78,125 B. 35 C. 16,807 D. 117,649
Mathematics
Solve the problem.One number is 4 less than a second number. Twice the second number is 17 more than 3 times the first. Find the two numbers.
A. -10 and -6 B. -8 and -4 C. -9 and -5 D. 5 and 9
Mathematics