We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website.
Please click on "Accept cookies" if you agree to the setting of cookies. Cookies that do not require consent remain unaffected by this, see
cookie policy and privacy policy.
DECLINE COOKIES

Please help! I am not good with these types of problems. I'm really confused!

mathelp May 2, 2018

#1**+2 **

1)

Let the height of the TV = H

16 / 9 = 50 / H cross multiply

16H =9 x 50

16H =450 divide both sides by 16

H = 28.1 inches - the height of the TV.

2) I'm not sure which "leg" you want, since a right triangle has 2 legs!! At any rate:

Cos(45) = Adjacent leg / Hypotenuse

1/sqrt(2) = Adjacent leg / 12 cross multiply

**Adjacent leg = 12 / sqrt(2)**

Sin(45) =Opposite leg / Hypotenuse

1/sqrt(2) = Opposite leg / 12 cross multiply

**Opposite leg =12 / sqrt(2)**

**Note: You got 2 legs for the price of one!!! Notice that they exactly the same because this is an isoscelles right triangle.**

6)

Sin(F) = 96 / 100 =0.96

Sin(G) = 28 / 100=0.28

7)

Student A is correct, because we know the angle and the opposite side to that angle:

Sin(35) = 12 / x

0.57358 = 12 / x cross multiply

0.57358x =12 divide both sides by 0.57358

x =12 / 0.57358

**x =20.92**

8)

Sin(31) = Height of the slide / 4.3

0.515 =Height / 4.3 cross multiply

Height =4.3 x 0.515

**Height =2.21 m - the height of the slide.**

Guest May 2, 2018