




Consider a
ABC right angled at C and
Then,
‣ Base [B] = BC
‣ Perpendicular [P] = AC
‣ Hypotenuse [H] = AB

Let,
Base = 7k and Perpendicular = 8k, where k is any positive integer
In
ABC, H² = B² + P² by Pythagoras theorem






Calculating Sin




Calculating Cos




<u>Solving the given expression</u><u> </u><u>:</u><u>-</u><u> </u>

Putting,
• Sin
= 
• Cos
= 

<u>Using</u><u> </u><u>(</u><u>a</u><u> </u><u>+</u><u> </u><u>b</u><u> </u><u>)</u><u> </u><u>(</u><u>a</u><u> </u><u>-</u><u> </u><u>b</u><u> </u><u>)</u><u> </u><u>=</u><u> </u><u>a²</u><u> </u><u>-</u><u> </u><u>b²</u>










✧ Basic Formulas of Trigonometry is given by :-


✧ Figure in attachment

Answer:
21 kilometers!
Explanation: You add the two distances she rode her bicycle and add them together. 9+12 = 21kilometers!
Answer:
(1252+252)(52−1)
=(1252+252)(52+−1)
=(1252)(52)+(1252)(−1)+(252)(52)+(252)(−1)
=390625−15625+15625−625
=390000
divide by 39 is
=10000
Answer:
C. 55
3.5x + 15
Step-by-step explanation:
i found it on google