Step-by-step explanation: Consider the right angled triangle as shown in the picture attached. The triangle has been drawn with angle measuring 43 degrees, side c (line AB) measuring 26.7 m and side a (line CB) is yet unknown.

A right angled triangle can be solved if at least one side and an angle are available. In this question we shall apply the trigonometric ratios since we have one angle which shall be the reference angle (43°). Also we have an hypotenuse (the side facing the right angle) and an unknown side which is the adjacent (which lies between the right angle and the reference angle).

Cos B = Adjacent/Hypotenuse

Cos 43 = a/26.7

Cos 43 x 26.7 = a

0.7314 x 26.7 = a

19.52714 = a

a ≈ 19.5 (rounded to the nearest tenth)

Therefore the length of side a equals 19.5 metres.

3 0

3 years ago

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Help!! whats the answer? and how do I solve!! :(

Sever21 [200]

I think the answer is 20.25 because when solving for the area of a triangle you do 1/2 base times height and so the equation would be
1/2(9)(4.5)
you would start by doing 9(4.5) which equals 40.5
then you would divide by 1/2 which equals 20.25
hope this helps:)

5 0

3 years ago

Which expression is the factored form of x2 – 7x + 10? (x + 3)(x + 4) (x – 3)(x – 4) (x – 2)(x – 5) (x + 2)(x + 5)

vivado [14]

(x-2)(x-5) because -5x-2=10 and -5+-2=-7

6 0

3 years ago

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Gabby buys a new purse for $33. The sales tax in her state is 6%. How much is the sales tax?

ankoles [38]

Answer:

$1.98

Step-by-step explanation:

6%=0.06

33*0.06=1.98

8 0

3 years ago