How do i know that my angle measurements are acute

If sin a = - 4/5 and cos a > 0, find tan a and sec a.

A-Plus Auto Body is painting flames on a customer's car. They need 2 1/2 pints of red, 3 pints of orange, 3/4 pint of yellow, and 7 pints of blue paint. They use 3/4 of the blue paint to make the flames.

The sum of three consecutive odd integers is - 315 find three integers

Evaluate 15+w for w=6

Maria can read 20 pages of economics in an hour. She can also read 50 pages of sociology in a hour. She ... ? Maria can read 20 pages of economics per hour. She can also read 50 pages of sociology in an hour. She spends 5 hours per day studying. a.

Write an algebraic expression that represents how many total cars there are on the toyota car lot if there are r rows and each row contains 37 cars

Simplify the radical expression - 21√27x^9

an 18 - foot ladder is keaning against the side of a building forming a right triangle. The angle formed by the ladder by the kadder snf to the ground is 60°.

What is the answer to k/7 + 3 - 2k = - 3

What is the answer for this problem?-4k+2 (5k-6) = - 3k-39