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Class 12 Mathematics Trigonometric Functions Trigonometric functions and their propertiesEasyLevel 72

If (\sin x=\frac{3}{5}) and (x) is in the first quadrant, what is the value of (\cos x)?

Answer and explanation

Correct answer: (\frac{4}{5})

Using (\sin^2 x+\cos^2 x=1), (\cos x=\frac{4}{5}). In the first quadrant, (\cos x) is positive.

Tags

identityfirst-quadrantcosine

Frequently asked questions

What is the correct answer to this question?

(\frac{4}{5})

Why is this the correct answer?

Using (\sin^2 x+\cos^2 x=1), (\cos x=\frac{4}{5}). In the first quadrant, (\cos x) is positive.

Which subject and chapter does this question cover?

This is a Class 12 Mathematics question. Chapter: Trigonometric Functions. Topic: Trigonometric functions and their properties.

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