sine and cosine rule

Find the area of the triangle whose sides are 12cm, 5cm and 13cm.

(write the result without units)

Tags

CCSS.6.G.A.1

A triangle has sides equal to a=4 m, b=11 m and c=8 m. Find $<A$   .(round answers to nearest tenth)

•  $16,21\degree$  

•  $129,84\degree$  

•  $33,95\degree$  

• no solution

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

triangle MNO: 

given sides n=31m, o=28m and angle  $<M=62\degree$  

find side m
(round answers to nearest tenth and write the result without units)

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Calculate the perimeter of triangle ABC.(obvod)

• 17,16cm

• 13,94cm

• 6cm

• 5,2cm

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

The diagram shows 3 helicopters D, E and F. Helicopter D is due South of helicopter E.

Find the distance of helicopter F from helicopter E

• 216m

• 772m

• 988m

• 108m

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

A UFO is flying above two people, standing on the ground at points A and B. A and B are 300m apart.

The angle of elevation of the UFO from A is 30°

The angle of elevation of the UFO from B is 23°

Find the height of the UFO above the ground.

advice: find area

• 73,4m

• 117,2m

• 150m

• 80m

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find the circumradius of the triangle ABC if a=5cm, b=7cm and $<B=53\degree$  

(round answers to nearest tenth and write the result without units)

Tags

CCSS.HSG.SRT.D.9