Mark as true any statement that is always true. Mark as false any statement that is never true or that is not necessarily true. Be able to justify your answers.
1. A right triangle with sides 5, 12 and 13 has angles of approximately 22.6°, 67.4° and 90°.
2. (tan A)(sin A) cosA
3. You can use the Law of Sines on a right triangle.
4. You can only use the Law of Cosines on a triangle where
1. T
2. F—(tan A)(cos A) sin A.
3. T
4. F: The Law of Cosines works on any triangle, not just right triangles.
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Provide an appropriate response.The premiums on an insurance policy are $20 a month, payable at the beginning of each month. If the policy holder wishes to pay 1 year's premiums in advance, how much should be paid provided that the interest rate is 5.1% compounded monthly?
Fill in the blank(s) with the appropriate word(s).
Solve the equation.x2 + 5x - 50 = 0
A. -10, 5 B. 10, -5 C. 10, 5 D. -10, 1
Write the percentage as a decimal number.0.3%
A. 0.3 B. 0.004 C. 0.003 D. 0.03
Solve.3x + 3y + z = -194x - 2y - z = -185x + y + 3z = -21
A. (-5, 2, -2) B. (-5, -2, 2) C. (2, -5, -2) D. (2, -2, -5)