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Chapter 7: Q. 5 (page 485)

$\cos (α + β) = \cos α \cos β_______\sin α \sin β$

Short Answer

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$-$

Step by step solution

Step 1. Given information

We need to fill the blank in the given expression with the right sign,

$\cos (α + β) = \cos α \cos β_______\sin α \sin β$

Step 2. Fill the blank

The compound angle $\cos (α + β)$ formula is:

$\cos (α + β) = \cos α \cos β - \sin α \sin β$

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$\cos (α + β) = \cos α \cos β_______\sin α \sin β$

Short Answer

Step by step solution

Step 1. Given information

Step 2. Fill the blank

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Most popular questions from this chapter

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cos(α+β)=cosαcosβ_______sinαsinβ

Short Answer

Step by step solution

Step 1. Given information

Step 2. Fill the blank

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Geometry

Decision Maths

Applied Mathematics

Logic and Functions

Mechanics Maths

Calculus

Study anywhere. Anytime. Across all devices.

$\cos (α + β) = \cos α \cos β_______\sin α \sin β$