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​ In triangle ABC, cos A = 7/25. Which other expression has a value of 7/25?

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In triangle ABC, cos A = 7/25. Which other expression has a value of 7/25?

A) sin B

B) cos A

C) cos B

D) tan A

E) tan B

The parking lot of a store has the shape shown. All angles are right angles. What is the area of the parking lot?

A) 41 yd^2

B) 65 yd^2

C) 80 yd^2

D) 90 yd^2

E) 105 yd^2

What is the perimeter of the triangle?

A) approximately 22.5 units

B) approximately 18.1 units

C) approximately 15.7 units

D) approximately 12.2 units

E) approximately 6 units

Nov 5, 2019

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1) sin B

2) We have two rectagles, here....one  is a 5 x 4 rectangle  and the other is a   15 x 3 rectangle

So.....thetotal area  is  ( 5 x 4)  + (15 x 3)   =  (20) + ( 45)  =   65 yards^2

3)  We have a right triangle  with legs of 3 and 6

The hypotenuse    = sqrt  (3^2 + 6^2)   =  sqrt ( 9 + 36)  =  sqrt (45)  ≈  6.7 units

So the perimeter  =  3 + 6 + 6.7  ≈   15.7 units

Nov 5, 2019