Find the value of sin(90+30)

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Find (sin 90) / ( sin 60 cos 30 + cos 60 sin 30), Trigonometric Ratios

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How is the value of sin (90+30) equal to cos (30)? - Quora

How do you find the exact value of sin(-90)?

The Easy Guide to the 30-60-90 Triangle

What are the values of sin 30, sin 60, sin 45, and sin 90 in numericals? - Quora