Find the exact value of the expression. cos 50° cos 10° - sin 50° sin 10° sin 200° cos 80° - cos 200° sin 80°

Q: tan(-212°) = _____. -cot 32° tan 32° cot 32° -tan 32°

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Q: cos 165° 57 sin 12 sin 플cosa-coo플 sina 2 tany-tan 2

A: Trigonometric identities help to find and simplify the given expressions. Trigonometric identities…

Q: Va- Vo 7. The exact value of cos 75° can be expressed in the form The value of a is The value of b…

A: Given expression, cos 75°

Q: Find the exact value of each expression.Do not use a calculator.

A: Given: tan 20∘-cos 70∘cos 20∘

Q: Sin 45" Tanko' t 30° Cas 135¢ Cos 135 7 Tan I50 cos 120°

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Q: find the exact value of each expression. do not use a calculator 9) cos(75 degrees) cos(15 degrees)…

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Q: Simplify the expression by first substituting values from the table of exact values and then…

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Q: 8 cos 10° cos 50° cos 70°

A: cos10°cos50°cos70°=√3/8Explanation:Step 1: Step 2: Step 3: Step 4:

Q: Find the exact value of the expression. cos105°

A:

Trigonometric Identities

Trigonometry in mathematics deals with the right-angled triangle’s angles and sides. By trigonometric identities, we mean the identities we use whenever we need to express the various trigonometric functions in terms of an equation.

Inverse Trigonometric Functions

Inverse trigonometric functions are the inverse of normal trigonometric functions. Alternatively denoted as cyclometric or arcus functions, these inverse trigonometric functions exist to counter the basic trigonometric functions, such as sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (cosec). When trigonometric ratios are calculated, the angular values can be calculated with the help of the inverse trigonometric functions.