Express the number in decimal notation.7 × 10-7
A. 0.0000007
B. -700,000
C. 0.00000007
D. 0.000007
Answer: A
Mathematics
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The point P(x, y) on the unit circle that corresponds to a real number t is given. Find the values of the indicated trigonometric function at t.
?Find cot t.
A. 
B. - 
C. 
D. - 
Mathematics
Decide whether the expression is or is not an identity.cos (A + ?) = cos A
A. Not an identity B. Identity
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The angle ? is an angle in standard position and satisfies the given conditions. Find the indicated trigonometric function value of ?. Do not use a calculator.The terminal side of ? is in quadrant IV and lies on the line 
Find 
A. - 
B. 
C. 
D. 
Mathematics
Find the prime factorization of the number. Write any repeated factors using exponents.63
A. 33 ? 7 B. 3 ? 7 C. 32 ? 7 D. 3 ? 72
Mathematics