express sin 25° and cos 20° in term of trigonometric ratio of angles more than 50°
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NCERT Solution for Intorudction to Trigonometry. 1. ... ⇒625 – 50x + x2 = x2 + 25 ... ⇒A + 4A = 90° + 20° ... Express sin 67° + cos 75° in terms of trigonometric ratios of angles between 0° ...
Step-by-step explanation:
Measurement and Geometry : Module 25 Year : 10. June 2011 ... The sine, cosine and tangent of negative angles can be defined as well. ... The angle shown is now greater than 360°.
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