Answer:
Step-by-step explanation:
-In a right triangle, the Sine of the base acute angle is usually given as:
-In ΔVWX,, VX is the opposite and WV the hypotenuse.
-Therefore, sine of ∠Wis calculated as;
Hence, sine of ∠W is given represented by the ratio 
Answer:
The answer is 18.7
Step-by-step explanation:
8.5*2.2=18.7
I hope this helps!
It's an isosceles triangle so angles A and BCA are congruent.
Angle BCA is the supplement of BCD, so 180-109 = 71.
Angle A is congruent to that, so A=71 degrees.
Let's see if we can get that in the format they want, kind of as a proof.
1. ∠BCD=109° Reason: Given
2. AB ≅ BC Reason: Given
3. ∠BCA = 71° Reason: Linear pairs are supplementary
4. ΔABC is isosceles. Reason: Definition of isosceles
5. ∠A ≅ ∠BCA Reason: Isoceles triangle theorem
6. ∠A = 71° Reason: Def congruent
Answer: 71 degrees
Vo tdusri cheesa mucha confuse kar ria hai haina
