Final Exam Review-Chp.15 (18-19)

Which one is the easy way to remember trigonometric ratios?

• Sah Coh Toa

• Soh Cah Toa

• Soh Cah Tao

• Soh Ceh Toa

Which of the following formulas shows the Law of Cosines?

• c² = a² + b² - 4ac + cosA

• c² = a² - b² - 2abcosC

• c² = a² + b² - 2abcosC

• (cos A)/a = (cos B)/b

Which is not the SINE RULE?

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What is the area of this triangle?

• 14.5 m²

• 108 m²

• 54.1 m²

• 54.4 m²

Find the Area of a triangle if a=9cm, b=4cm, and C=98degrees

• 16.7cm²

• 35.6cm²

• 17.8cm²

• not a triangle

What is the length of side x?

• 6.57 cm

• 7 cm

• 7.44 cm

• 26.33 cm

Find the measure of the indicated angle (?) round to the nearest tenth.

• 9.4^o

• 55.2^o

• 20.15^o

• 19.4^o

• 34.8^o

Susan is flying a kite, which gets caught in the top of a tree. Use the diagram to estimate the height of the tree.

• 63 ft

• 65 ft

• 74 ft

• 87 ft

• 84 ft

Which of the following is correct for finding the measure of angle Z?

• ∠Z = tan^-1 55/48
• ∠Z = sin^-1  48/55
• ∠Z = cos^-1  55/73
• ∠Z = tan^-1  48/73

Find QR

• 34.7 km

• 2.2 km

• 13.74

• 31.1 km

• 1205 km