16.) ABC is a triangle in which AD is the altitude from A such that AD 12 m, BD = 9 m and DC = 16 m. Show that ABC is a right- angled triangle, right-angled at A.
17. )Two poles of height 10 m and 25 m stand the plane ground. If the distance between their feet is 36 m, find the distance between their tops.
18. In a triangle ABC right-angled at B, AB = 2 cm. A point D lies on BC such that BD = 1 cm and AD = BC. Find AC.
19. In a AABC, ZABC = 100°, ZACB = 35° and BD I AC meets the side AC at D. If BD = 2 cm, find ZCAB and length AD.
20. ABC is an isosceles triangle, right-angled at C. Show that AB2 = 2AC2. - = a = 11 of
Answers
Answer:
6.) ABC is a triangle in which AD is the altitude from A such that AD 12 m, BD = 9 m and DC = 16 m. Show that ABC is a right- angled triangle, right-angled at A.
17. )Two poles of height 10 m and 25 m stand the plane ground. If the distance between their feet is 36 m, find the distance between their tops.
18. In a triangle ABC right-angled at B, AB = 2 cm. A point D lies on BC such that BD = 1 cm and AD = BC. Find AC.
19. In a AABC, ZABC = 100°, ZACB = 35° and BD I AC meets the side AC at D. If BD = 2 cm, find ZCAB and length AD.
20. ABC is an isosceles triangle, right-angled at C. Show that AB2 = 2AC2. - = a = 11 of
Step-by-step explanation:
6.) ABC is a triangle in which AD is the altitude from A such that AD 12 m, BD = 9 m and DC = 16 m. Show that ABC is a right- angled triangle, right-angled at A.
17. )Two poles of height 10 m and 25 m stand the plane ground. If the distance between their feet is 36 m, find the distance between their tops.
18. In a triangle ABC right-angled at B, AB = 2 cm. A point D lies on BC such that BD = 1 cm and AD = BC. Find AC.
19. In a AABC, ZABC = 100°, ZACB = 35° and BD I AC meets the side AC at D. If BD = 2 cm, find ZCAB and length AD.
20. ABC is an isosceles triangle, right-angled at C. Show that AB2 = 2AC2. - = a = 11 of