How do you use the angle difference identity to find the exact value of cos−15 ? https://socratic.org/questions/how-do-you-use-the-angle-difference-identity-to-find-the-exact-value-of-cos-15 cos(−15o)=0.9659 Explanation: cos(−15o)=cos(30o−45o) = cos30ocos45⊕sin30o...
Find the exact value of {eq}\displaystyle{ \cos \left ( \frac{-7 \pi}{ 12 } \right ). } {/eq} Trigonometric Identities: Trigonometric functions are not linear. That means that they do not behave according to simple intuition. For example, the sine of 30 degrees is equal to {eq}...
Find the exact value of each of the six trigonometric functions of theta, if (- 6, -7) is a point on the terminal side of angle theta. Find the exact value of cos theta for the angle -4pi/3. Use the figure to find the exact value of the following trigono...
is defined to be the cube root of 1 3√3i that lies in the first quadrant of the complex plane and Re(z) referred to as the real part of the imaginary number z. The exact values of Re(z), Re(zw), and Re(zw), are determined later. Hence, the exact value of cos (π/7) ...
( (sin)(2⋅ 150))Multiply( 2) by ( 150).( (sin)(300))Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because sine is negative in the fourth quadrant.( -(sin)(60))The exact value of ( (sin)(60)...
In solving for the exact value of a trigonometric expression, we have to use the trigonometric identities. These identities has its own characteristics and in each trigonometric expression. Answer and Explanation:1 We are given the trigonometric expression {eq}\tan \left(\arccos \left(\frac{-\sq...
If the value of sin theta = 1/3, then find out the value of tan theta. Use the figure to find the exact value of the following trigonometric function. sin (2 theta) Find sin theta, where theta is the angle shown. Give an exact value, not a decimal approximation. ...
结果1 题目【题目】If you are given the value of cose and want the exact value of cos(2θ), what form of the Double-angle Formula for cos(20) is most efficient touse? 相关知识点: 试题来源: 解析 【解析】cos(2θ)=2cos^2θ-1 ...
Q.Find the Exact value of Sin 15 using trigonometry table values. Answer-sin15° can be written as, sin(45° -30°) sin15°= sin(45° -30°)= sin45° cos30°-cos45°sin30°, [using sin(X-Y)=sinXcosY-cosXsinY] or,sin15° = (1/√2×√3/2)- (1/2×1/√2) { using ...
Example 1 Find theexactvalue ofcos 75oby using75o= 30o+ 45o. Answer Example 2 Ifsinα=45\displaystyle \sin{\alpha}=\frac{4}{{5}}sinα=54(in Quadrant I) andcosβ=−1213\displaystyle \cos{\beta}=-\frac{12}{{13}}cosβ=−1312(in Quadrant II) evaluatesin(...