Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because tangent is negative in the second quadrant. The exact value of tan(0) tan (0) is 0 0. Multiply −1 - 1 by 0 0.

Trigonometry is a branch of mathematics that deals with the relationships between the sides and angles of triangles. It uses functions such as sine, cosine, and tangent to describe the ratios of the sides of a right triangle based on its angles. The three basic trigonometric functions are: Sine (sin), Cosine (cos), and Tangent (tan).

2021年4月2日 · 求法之一如下：由公式 tan (α/2)＝ (1-cosα)/sinα 即得tan (3π/8)＝ [1-cos (3π/4)]/sin (3π/4)＝ [1- (-1/√2)]/ (1/√2)＝√2+1.

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Apply the tangent half - angle identity. Change the ± ± to + + because tangent is positive in the first quadrant. Simplify ⎷ 1− cos(3π 4) 1+ cos(3π 4) 1 - cos (3 π 4) 1 + cos (3 π 4). Tap for more steps... The result can be shown in multiple forms. Exact …

tan (45°) = 1 (exactly) To use this calculator, just type a value for the angle, then press 'Calculate'. You may choose radians (rad) or degrees (°) as the angle unit. The default unit is degree (°) 3pi/4 → sin (3pi/4) = 0.707 ...

2017年12月27日 · tan(3π / 11) + 4sin(2π / 11) = √11. This is a famous problem! A proof, which I got from just googling, appears as a solution Problem 218 in the College Mathematics Journal. Snapshot: You should be able to find a couple of different proofs more and references here: http://arxiv.org/PS_cache/arxiv/pdf/0709/0709.3755v1.pdf.

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because tangent is negative in the second quadrant. The exact value of tan(π 4) tan (π 4) is 1 1. Multiply −1 - 1 by 1 1.

Tan 3pi/4 degrees is the value of tangent trigonometric function for an angle equal to 3pi/4. Understand methods to find the value of tan 3pi/4 with examples and FAQs.

2015年9月22日 · You may find tan ((3pi)/4) by 2 ways. 1. By the Trig Table (of Special Arcs) Trig Table gives --> # tan ((3pi)/4) = -1# 2. By the trig unit circle. #tan ((3pi)/4) = - tan (pi)/4# On the trig unit circle, the segment #AT = tan ((pi)/4)# The triangle OAT is isosceles, #tan (pi/4) = AT = OA = 1#. Therefor #tan ((3pi)/4) = - tan (pi/4) = - 1#.