How to memorize values of sin, cos, tan, cosec, sec and cot for 0, 30, 45, 60 and 90 degrees?
Value of sin, cos, tan, cot at 0, 30, 45, 60, 90 - Trigonometry Table
sin90∘+cos90∘ 10. Find the value. (a) sin245∘⋅cosec230∘−sec260∘ (b) 4sin2..
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