Verify as an identity: cos (90°+x) = - sinx

I'm not sure how to go about this question

Maria worked for 5 hours and 15 minutes how should she write that on her time card

To find the distance between (-2,-3) and (4,1), Peggy's teacher drew a diagram and marked blue lines to represent the legs of a right triangle. Peggy then used 4² and 6² to find the distance represented by the red segment.

Use the information in the table below to answer the following question. Name of Fund NAV Offer Price Upton Group $18.47 $18.96 Green Energy $17.29 $18.01 TJH Small-Cap $18.43 $19.05 WHI Health $20.

The statement "Angles that measure more than 90 degrees are obtuse angles" has a counterexample

Which set of side lengths is a Pythagorean triple? M 1, 3, 10 4,5, 9 9, 40, 41 16, 30, 44

Diane worked 18 hours each week during the summer. She worked a total of 8 weeks and earned $9 an hour. How much money did Diane earn during the summer?

Which table shows equivalent measurements

What is the simplified value of the exponential expression 27^ 1/3

An alloy of tin is 15% tin and weighs 20 pounds. A second alloy is 10% tin How many pounds of the second alloy must be added to the first to get a 12% muture? 500

For what value of m is the equation true? X^2-6x+5=m + (x-3) - 6