Prove that : cos 30°. cos 60° - sin 30°. sin 60° = 0

Question

KnowledgeBoat · Accepted Answer

cos 30°. cos 60° - sin 30°. sin 60° = 0 L.H.S. = cos 30°. cos 60° - sin 30°. sin 60° R.H.S. = 0 ∴ L.H.S. = R.H.S. Hence proved, cos 30°. cos 60° - sin 30°. sin 60° = 0.

Mathematics

Prove that :
cos 30°. cos 60° - sin 30°. sin 60° = 0

Trigonometric Identities

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Mathematics

Prove that :cos 30°. cos 60° - sin 30°. sin 60° = 0

Trigonometric Identities

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cos 30°. cos 60° - sin 30°. sin 60° = 0

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3 sin² 30° + 2 tan² 60° - 5 cos² 45°

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sin 60° cos 30° + cos 60°. sin 30° = 1

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cosec² 45° - cot² 45° = 1

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