Use half-angle formulas to find the exact value for the following:
?
tan 105°

What will be an ideal response?



Mathematics

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For the given polar equation, write an equivalent rectangular equation.r sin ? = 10

A. x = 10 B. x = 10y C. y = 10x D. y = 10

Mathematics

Convert.7.8 tons to pounds

A. 15,600 lb B. 124.8 lb C. 7800 lb D. 1560 lb

Mathematics

Solve the problem.If tan ? = -4.5, find the value of tan ? + tan (? + ?) + tan (? + 2?).

A. -13.5 + 3? B. -11.5 C. -13.5 D. undefined

Mathematics

Solve the problem.Find the temperature at which the Celsius and Fahrenheit scales coincide.

A. -25° B. 0° C. 39° D. -40°

Mathematics