One January 1st at West Bay, the firsy low tide was at 1:30am and at 0.7m, and the first high tide was at 7:45am at 2.8m. Assuming high tides and low tides occur at regular intervals. 1. Find two equivalent trigonometric equations that model the height in m of the tide at West Bay in terms of tike (t) in hours since midnight.

(You must use two different trigonometric functions from sine, cos or tan, and set t=0 as midnight on 1st January for each question)

2. Justify and prove that the two equations are equivalent, unless the proof is shown in your working.

yo answer should be 6 if im not mistaken

step-by-step explanation:

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!

hello 0xxbadwolfxx0,

2.6 x 10^9 is 2,600,000,000.

1.3 x 10^2 is 130

multiplying 130 and 2,600,000,000 would simply give you 200,000,000,000.

therefore, the answer would be d. 2.0 × 10^11.

i hope i ! warm regards, mae.