a) Complete the table given below by filling the blank spaces. b) On the grid provided draw on the same axes, the graph of y=4 cos²x...

a) Complete the table given below by filling the blank spaces.

b) On the grid provided draw on the same axes, the graph of y=4 cos²x and y=2 sin (2x +30^o ) for O^O ≤ X ≤180^O . Take the scale 1cm for 15^o on the x –axis and 1cm for 1 unit on the y-axis.
c) From your graph
i) State the amplitude of y= 4cos 2x.
ii) Find the period of y=2sin(2x +30^o )
d) Use your graph to solve 4cos 2x – 2sin (2x + 30^o ) = 0

Answers

c) i) Amplitude = 4
ii) 180⁰
d) 30⁰ 120⁰

Kavungya answered the question on November 8, 2019 at 09:43

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