Simplify the expression by using an appropriate identity. Do not use a calculator. (cos 12)(cos78°) -...
Simplify the expression by using an appropriate identity. Do not use a calculator (cos 12°)(cos78°) - (sin 12°)(sin78°), (COS 12°)(cos78°) - (sin 12°)(sin78°) = Enter your answer in the answer box. Previous
Simplify the expression by using an appropriate identity. Do not use a calculator. (cos72)(cos 18°) - (sin 72°)(sin18°) (cos72°)(cos18°) - (sin 72°)(sin 18°)=
Use the sum/difference identities to simplify the expression. Do not use a calculator. 51 571 COS - + n- ola O A. cos (1) O B. cos (6) OD. cos (5) Find the exact value by using a sum or difference identity. cos 285° 4 OA. - V3 (V3 - 1) O B. V2 (13-1) O C. - 12(73 +1) OD. - v2(13 - 1)
Use an identity to find the value of the expression. Do not use a calculator. sin 66° csc 66° sin 66° csc 66°= (Type an exact answer. Simplify your answer.)
Use identities to simplify the following expression. Do not use a calculator. (sinotelua cos pere) car Do not evaluate. Type an exact answer, using π as needed. Use integers or fractions for any numbers in the expression.) Use identities to simplify the following expression. Do not use a calculator. (sinotelua cos pere) car Do not evaluate. Type an exact answer, using π as needed. Use integers or fractions for any numbers in the expression.)
Establish the identity. 1 - sin 0 cos e + COS 0 1 - sin e = 2 sec Write the left side of the expression with a common denominator. Do not expand the numerator. cos (1 - sin o) Expand and simplify the numerator by rewriting without any parentheses. + cos20 cos (1 - sin o) Apply an appropriate Pythagorean Identity to simplify the numerator of the expression from the previous step. cos (1 - sin o) (Do not...
Use an identity to write the expression as a single trigonometric function. 1 - cos 86° sin 86° 1 o cos 86° sin 86° 11 (Simplify your answer.)
Verify the identity. 20 csc + cote cos 2 2csce Use the appropriate half-angle formula and rewrite the left side of the identity. (Simplify your answer.) Rewrite the expression from the previous step by multiplying the numerator and denominator by csc . Multiply and distribute in the numerator. (Do not simplify.) The expression from the previous step then simplifies to csc + cot 2c5cusing what? O A. Reciporcal and Even-Odd Identities O B. Reciprocal and Quotient Identities OC. Pythagorean and...
Verify the following identity. sin? x + cos2x = cos? To transform the left side into the right side, should be changed to and the left side simplified. Enter your answer in the answer box. Use the power-reducing formulas to rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1 40 sin?x cos? 40 sin’x cos2x = 0 Enter your answer in the answer box. Express the given product as a sum...
Verify the identity sin ( - = cos 0 Write the left side of the identity using a sum or difference formula for sine or cosine. (Do not simplify.) The expression from the previous step then simplifies to cos 0 using what?