# 9.4.1. Main Trigonometrical Ratios of the Acute Angle

Write the angle in degrees, minutes, and seconds.

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Convert the angle to decimal degrees approximating it to the nearest thousandth.

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is a right-angled triangle at , where cm and cm. Find .

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Given that is a right-angled triangle at in which cm, and cm, determine .

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Given that is a right-angled triangle at , cm, and cm, determine .

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Given that is a right-angled triangle at , cm, and cm, determine .

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Given that is a right-angled triangle at , cm, and cm, determine .

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Given that is a right-angled triangle at , where cm, and cm, determine .

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Given that is a right-angled triangle at , cm, and cm, find .

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Given that is a right-angled triangle at , in which cm and cm, find the length of .

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If the ratio between two complementary angles is , determine the value of each angle using circular measure.

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is a right triangle at , where cm and cm. Find the value of .

• A2.05
• B2.27
• C2.08
• D0.19
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is an isosceles trapezoid, in which , cm, cm, and cm. Determine .

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If the ratio between the measures of angles of a triangle is , find the circular measure of each angle.

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is an isosceles trapezoid in which cm and cm. Determine the area of.

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Given that is an isosceles trapezium, in which cm and cm, determine approximated to the nearest second.

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Given that is an isosceles trapezium, in which cm and cm, determine approximated to the nearest second.

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Given that in a trapezoid , , , cm, cm, and cm, find the value of .

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Given that is a right angle triangle at and , find the value of .

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