WebThe trigonometric functions of angles that are multiples of 15°, 18°, or 22.5° have simple algebraic values. These values are listed in the following table for angles from 0° to 90°. [1] For angles outside of this range, trigonometric values can be found by applying the reflection and shift identities. In the table below, stands for the ratio 1:0. WebTrigonometry Find the Exact Value sin(22.5 degrees ) Step 1 Rewrite as an anglewhere the values of the six trigonometric functionsare known divided by . Step 2 Apply the sinehalf-angleidentity. Step 3 Change the to because sineis positive in the first quadrant. Step 4 Simplify . Tap for more steps... The exact value of is .

Answered: Find the exact value of cos 22.5°, bartleby

WebThe exact value of cos(22.5) is √2 + √2 2. Tap for more steps... √2 - √2 2 ⋅ √2 + √2 2 Multiply √2 - √2 2 ⋅ √2 + √2 2. Tap for more steps... √2 4 The result can be shown in multiple forms. Exact Form: √2 4 Decimal Form: 0.35355339… WebApply the cosine double - angle identity. cos(2⋅22.5) cos ( 2 ⋅ 22.5) Multiply 2 2 by 22.5 22.5. cos(45) cos ( 45) The exact value of cos(45) cos ( 45) is √2 2 2 2. Tap for more steps... √2 2 2 2 The result can be shown in multiple forms. Exact Form: √2 2 2 2 Decimal Form: 0.70710678… 0.70710678 … the sims diabetic challenge

Find the Exact Value sin(22.5)cos(22.5) Mathway

WebExpert Answer. 100% (1 rating) Transcribed image text: Find the exact value of cos 22.5 degree using the half-angle identity. Choose the exact value of cos 22.5 degree A. - Squareroot 2 + Squareroot 2/2 B. Squareroot 2 + Squareroot 2/2 C. Squareroot 2/4 D. Squareroot 2 - Squareroot 2/2. Webcos (x) = 2 5 cos ( x) = 2 5. Take the inverse cosine of both sides of the equation to extract x x from inside the cosine. x = arccos(2 5) x = arccos ( 2 5) Simplify the right side. Tap … WebFree math problem solver answers your trigonometry homework questions with step-by-step explanations. my xbox turns on and shuts off