Q7Which statement is incorrect for the graph of thefunction y = -5 cosGcos( 3 (x – 3)) +62The period is 4.The amplitude is 3.The
1 answer:
The given function is,
The graph can be drawn as,
The period will be distance between two consequetive maximas,
Thus, period is correct.
The amplitude can be determined as,
Thus, amplitue is incorrect.
The range is,
Thus, the range is correct.
The midline is,
Thus, the midline is correct.
Thus, option (b) is the solution.
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<u>Question 2</u>
1) ,
(given)
2) (reflexive property)
3) and
are right angles (perpendicular lines form right angles)
4) and
are right triangles (a triangle with a right angle is a right triangle)
5) (HL)
Question 3
1) is a right angle,
,
(given)
2) is a right angle (perpendicular lines form right angles)
3) and
are right triangles (a triangle with a right triangle is a right angle)
4) (reflexive property)
5) (HL)
6) (CPCTC)
7) bisects
(if a segment splits an angle into two congruent parts, it is an angle bisector)