cos60°cos30°-sin60°sin30°​

Answers 2

[tex]0[/tex]

Step-by-step explanation:

cos60°cos30°-sin60°sin30°

[tex] \frac{1}{2} \times \frac{ \sqrt{3} }{2} \: \: - \: \: \frac{ \sqrt{3} }{2} \times \frac{1}{2} [/tex]

[tex] \frac{ \sqrt{3} }{4} \: - \: \frac{ \sqrt{3} }{4} [/tex]

[tex]0[/tex]

  • Author:

    ross

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This is like the formula cosAcosB - sinAsinB

i.e., cos(A+B)

i.e., cos(A+B)so., cos(60°+30°)

=> cos(90°)

=> 0

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[tex]\fcolorbox{yellow}{pink}{answer}[/tex]

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Answer:

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Answer:

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Answer:

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Answer:

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  • Author:

    lia

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