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Chapter 8: Q.3 (page 553)

Find an exact value of each expression, without using a calculator $\cos 62 - \sin 28$

Short Answer

Expert verified

The simplified value is $0$

Step by step solution

01

Step 1. Given information

The given expression is $\cos 62 - \sin 28$

02

Step 2. Convert into the same trigonometrical ratio

The given expression is $\cos 62 - \sin 28$

Here, $\cos (90 - θ) = \sin (θ)$

Therefore,role="math" localid="1646652714529" $= \cos (62) - \sin (28) = \cos (90 - 28) - \sin (28) = \sin (28) - \sin (28) = 0$

03

Step 3. Conclusion

Hence, the simplified value is $0$

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Most popular questions from this chapter

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