# Finding Values of Trigonometric Expressions

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Find the value of Trigonometric expression.

1) Cos [Sin^-1 (3/5)]

2) Cos [Tan^-1 (7/5)]

See attached file for full problem description.

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#### Solution Preview

Cos [Sin^-1 (3/5)] = 4/5

Cos [Tan^-1 (7/5)]= 6(sq.rt.85)/85

Please see the attached file.

Use sketch to find the exact value of the following Trigonometric expressions.

1) 2)

SOLUTIONS

1)

Step by step solution :

Let ...

#### Solution Summary

Detailed step by step solutions of all the problems attached are given in such a way that student can easily understand and work out other problems of the same type independently.

The types of Trigonometric Expressions solved are Cos [Sin^-1 (3/5)] Cos [Tan^-1 (7/5)], etc.

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