102k views
5 votes
Help with this question pls

Help with this question pls-example-1
User Yaroslawww
by
7.5k points

2 Answers

0 votes

Answer:

x = 8 cm

Explanation:

To solve it ,given that it is a right angled triangle.

We can use trigonometry functions

cos 60° = adjacent side / hypotenuse

cos 60° = 4 cm / x

multiply each side by x

x × cos 60° = 4 cm × x / x

x cos 60° = 4 cm

divide each side by cos 60°

x × cos 60°/cos 60° = 4 cm / 60°

x = 4 cm / 0.5 . .( given :- cos 60° =0.4 )

x = 8 cm

User Anztrax
by
7.9k points
6 votes

Answer:

x = 8

Explanation:

Since this is a right triangle, we can use trig functions

cos 60 = adj side/ hypotenuse

cos 60 = 4/x

x cos 60 = 4

x = 4 / cos 60

x = 4 / .5

x = 8

User Yann Ziselman
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories