Ok so cos(x) = sin(90-x) so using that you can get sin(7x-15) = sin(90-(3x+5)) so 7x-15 = -3x+85. 10x = 100 and x = 10. Use that to find the 2 angles are 55 and 35
The measure of ∠1 is also <span>93° because vertically opposite angles are equal.</span>
Answer:
Step-by-step explanation:
8-(-3)= 8+3+33=42
