# Double Angle Identities Worksheet

### Double angle and half angle identities use a double angle or half angle identity to find the exact value of each expression.

Double angle identities worksheet. During the bell work they saw an approach to these. 1 cos 7 π 8 2 sin 7π 8 3 sin 165 4 sin 112 1 2 5 sin 15 6 cos 23 π 12 7 sin 22 1 2 8 sin 5π 12 9 cos 3π 8 10 sin 75 11 sin θ 8 17 and 180 θ 270 find cos θ 2 12 sin θ. Download the set 3 worksheets. Using the double angle identities find each of the following given.

Using double angle identities to solve equations example 2. This is a special case where the sum of angles is obtained to get a double angle. 13 secx 5 x is not in quadrant three. If you found these worksheets useful please check out double angle and half angle identities with answers graphing inverse functions worksheet with answers pdf inver se functions worksheet with answers radian and degree measure worksheet with answers free trigonometric identities and formulas in pdfs free right triangle trigonomet ry.

Swbat use the sum and difference identities to find the double angle formulas. Add to favorites print lesson. 5 10sin2 x given. Rotate to landscape screen format on a mobile phone or small tablet to use the mathway widget a free math problem solver that answers your questions with step by step explanations.

Double and half angle identities date period use a double angle identity to find the exact value of each expression. Here we have provided you with a chart showing all the double angle formulas of functions. Precalculus advanced worksheet on double angle identities us a double angle formula to rewrite the expression. 5 tan 45 6 sin 165 7 sin 5π 6 8 cos 30.

For example sin 2a cos 2a tan 2a etc. Recapitulate the application of double and half angle formulas with these printable high school worksheets. 4 sinx 5 x is in quadrant one. Mixed review double and half angle identities.

Sin a. Observe the angle measure check if it can be expressed in double or half angle and then apply the appropriate formula to simplify. 1 sin 120 2 tan 60 3 cos 4 π 3 4 sin 5π 3 use a half angle identity to find the exact value of each expression. Using the double angle identities find each of the following given.