# 9.4.2. Main Trigonometrical Ratios of Some Angles

Find .

• A
• B
• C
• D
Show Solution

Calculate .

• A
0.9866
• B
6.0471
• C
1.0136
• D
0.1632
Show Solution

Calculate .

• A
0.804
• B
1.5959
• C
0.6266
• D
0.7793
Show Solution

Calculate .

• A
0.5644
• B
1.2114
• C
0.8255
• D
1.4627
Show Solution

Find the value of .

• A
• B
• C
• D2
Show Solution

Find the value of .

• A
• B8
• C4
• D
Show Solution

Determine the value of without using a calculator.

• A
• B
• C
• D
Show Solution

If , determine .

• A
• B
• C
Show Solution

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

• A
• B
• C
• D
Show Solution

If , find .

• A
• B
• C
Show Solution

If , find .

• A
• B
• C
Show Solution

If , where is an acute angle, then .

• A
• B
• C
• D
Show Solution

If , where is an acute angle, then .

• A
• B
• C
• D
Show Solution

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

• A
• B
• C
• D
Show Solution

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

Show Solution

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

• A
• B
• C
• D
Show Solution

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

• Acm
• Bcm
• Ccm
• Dcm
Show Solution

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
Show Solution