Lesson Example Discussion Quiz: Class Homework |
Quiz Discussion |
Title: Trigonometry ratios in right triangles |
Grade: 1400-a Lesson: S3-L2 |
Explanation: Let us discuss a few questions on this topic and review the answers to every question. |
Quiz: Discussion in Class
Problem Id | Problem | Options |
---|---|---|
Steps 1 |
In the ∆OPQ, right-angled at P, PQ = 5cm, and OQ - OP = 3cm. Determine the value of sin Q + cos Q. |
A) \$ 24/17\$ B) \$ 41/40\$ C) \$ 33/17\$ D) \$ 23/17\$ |
Steps 2 |
In the given figure, BC: AC = 3 : 4 and perimeter of △ABC = 60 cm. Determine AC, CD, and BA. |
A) AC = 20 cm , CD = 30 cm and BA = 25 cm B) AC = 25 cm , CD = 30 cm and BA = 20 cm C) AC = 30 cm , CD = 20 cm and BA = 25 cm D) AC = 20 cm , CD = 25 cm and BA = 30 cm |
Steps 3 |
If in a right-angled triangle ABC, right-angled at B, hypotenuse AC = 4cm, base BC = 7cm, and perpendicular AB = 3cm and if ∠ACB = \$ \theta\$, then find tan \$ \theta\$, sin \$ \theta\$, and cos \$ \theta\$. |
A) \$tan \theta = 3/7, sin \theta = 4/3, cos \theta = 7/4\$ B) \$tan \theta = 3/7, sin \theta = 3/4, cos \theta = 4/7\$ C) \$tan \theta = 3/7, sin \theta = 3/4, cos \theta = 7/4\$ D) \$tan \theta = 7/3, sin \theta = 4/3, cos \theta = 7/4\$ |
Steps 4 |
In a right triangle ABC, right-angled at B, If tan A = 1 then find the value 2sinAcosA. |
A) 2 B) 1 C) -1 D) -2 |
Steps 5 |
In a triangle XYZ, right-angled at Y, XY = 15 inches, and angle \$ X = 30^o\$.Find cos X. |
A) \$ 1/2\$ B) -2 C) \$- 1/2\$ D) 2 |
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