Question

find the trigononmetric ratios of cos A=root3/2​

Answer 1

cos A = √3/2

Then, A = 30°

Note :

Some basic trigonometric ratios of cos :

• cos 0° = 1

• cos 30° = √3/2

• cos 45° = 1/√2

• cos 60° = 1/2

• cos 90° = 0

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Answer 2

cos A = √3/2

cos A = cos 30

A = 30°

Thus:-

• sin A = sin 30 = 1/2
• sec A = 2/√3
• cosec A = 2
• tan A = 1/√3
• cot A = √3