# 9.4.2. Main Trigonometrical Ratios of Some Angles

is an isosceles triangle, in which cm and cm. Find approximated to the nearest second.

- A
- B
- C
- D

Given that is a rectangle in which cm and cm, determine approximated to the nearest second.

- A
- B
- C
- D

Determine the surface area of the rectangle , given that cm and cm.

Show SolutionGiven that is a parallelogram having an area of , where , , and cm, determine to the nearest second.

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- B
- C
- D

Given that is an isosceles triangle, in which cm and , determine the length of to the nearest decimal number.

- Acm
- Bcm
- Ccm
- Dcm

A ladder having a length of m, its upper edge is on a vertical wall, and its other edge is on a horizontal floor. If is the projection of the point on the surface of the floor, and its angle of slope to the surface of the floor is , find the length of .

- Am
- Bm
- Cm
- Dm