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Chapter 12: Q. 11 (page 840)

Find the exact value ofcos-10.5

Short Answer

Expert verified

The value ofcos-10.5is60鈭�=蟺3

Step by step solution

01

Step 1. Given Information

The given inverse trigonometric function iscos-10.5

02

Step 2. Finding solution

Lety=cos-10.5y=cos-112y=60鈭�

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Most popular questions from this chapter

In Problems 17鈥�28, write down the first five terms of each sequence.

an=3nn

In Problems 17鈥�28, write down the first five terms of each sequence.

tn=(-1)n(n+1(n+2)

In Problems 71-82, find the sum of each sequence.

鈭�(k2k=116+4)

In Problems 71-82, find the sum of each sequence.

鈭�k=1408

Fibonacci Sequence: Let

un=(1+5)n-(1-5)n2n5

define the nth term of a sequence.

(a) Show that u1= 1 and u2 = 1.

(b) Show that un+2 = un+1 + un.

(c) Draw the conclusion that {un} is the Fibonacci sequence.
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