The area of a bulletin board is 55 ft2. The length is nine feet less than four times the width. Find the length and the width, i
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Answer:
A) 20°
Step-by-step explanation:
Sine and cosine are co-function complements which means that value of sine of an angle is equal to the value of cosine of the complementary angles.
This can be represented by:
Given statement:
Applying co-function complements
Since, we can represent 70° = 90°-20°
So
Thus, makes the statement true.