Question

जर sin thita =4/5तर cos thita=​

Answer 1

Answer:

Sin € = 4/5

We know that,

sin^2€ + cos^2€ = 1 - Identity

(4/5)^2 + cos^2€ = 1

16/25 + cos^2€ = 1

cos^2€ = 1 - 16/25

cos^2€ = 25 - 16 / 25

cos^2€ = 9/25

Taking square root on both sides.

:. cos€ = 3/5

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