Answer:
cos(20°)
Step-by-step explanation:
The "cofunction" is the function having the same value for the complement of the angle that this function has for the angle.
The cofunction of sine is cosine. The complement of 70° is 90° -70° = 20°.
sin(70°) = cos(20°)
The answer is 101.76 , take away the 25% by making it a decimal and multiplying . add the 6.4% tax rate and the answer is 101.76
Answer:
Step-by-step explanation:
It's 14
Just use the inverses: sin^-1, cos^-1, and tan^-1. For example, #13, you would type in your calculator, tan^-1 (30/33), and then you'll get 43.15 degrees.
The amount of sales tax will be $23.80.
