* Is it right to say that cos(60°+30°) = cos 60° cos 30° – sin 60° sin 30°.

slove this clearly on paper…

# * Is it right to say that cos(60°+30°) = cos 60° cos 30° – sin 60° sin 30°.

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Answer:(60+30) -90 degree (60+30)-(60-30)- 0

Step-by-step explanation:my answer is 90 and 0

Answer:Yes, the statement is correct.

As we have cos(A+B)=cosA.cosB−sinA.sinB. [ Standard formular]

For the given problem, A=60°

B=30°

Step-by-step explanation:## I hope that it will help you