Question

যদি 3cos Q – 4sing = 5 হয়, তবে দেখাও যে
3sina + 4cos Q = 0​

Answer 1

Step-by-step explanation:

3cosQ - 4sina = 5. 1

3sina + 4cosQ = 0 2

if we square both the equations we get

9cos square Q + 16sin square a - 24sinacosQ =25

9sin square a + 16 cos square Q +24sinacosQ =0

if we add both equations we can get

25sin square a + 25cos square Q = 25

25 ( sin square a + cos square Q ) =25

sin square a + cos square Q = 1

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