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Use a calculator to find the approximate value of the expression. Round the answer to two decimal places. The cosine of the complimentary angle of 60°. a. 0.50 c. 0.25 b. 0.86 d. 0.71
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1 vote
Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.

The cosine of the complimentary angle of 60°.

a.

0.50

c.

0.25


b.

0.86

d.

0.71

User Yahia Farghaly
by
8.2k points

2 Answers

3 votes

Answer:

0.86

Explanation:

User Jglatre
by
8.3k points
1 vote
The complementary angle of 60° is 30°

cos(30°) = (√3)/2 ==> cos30°=0.86 (or b.)

User Juanmah
by
7.4k points
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