If the sin 90° = 1, then which statement is true? cos 0° = 1, because the cosine and sine are complements cos 90° = 1, because the cosine and sine are supplements cos 0° = 0, because the cosine and sine are complements cos 90° = 0, because the cosine and sine are supplements

,because the cosine and sine are complements.

Step-by-step explanation:

We are given that

We have to find the true statement.

To find the correct answer we will convert sin into cosine

Formula:

The given expression can be write as

Using the formula

We know that

Hence, because the cosine and sine are complements.

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950