7. Prove that these identities are true :- (a) 5 sin’A + 3cos? A = 2 sin’A + 3 (b) 4 cos?a - 2sin?a = 6cos'a - 2 (c) (2c

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7 Prove That These Identities Are True A 5 Sin A 3cos A 2 Sin A 3 B 4 Cos A 2sin A 6cos A 2 C 2c 1 (24.98 KiB) Viewed 64 times

7. Prove that these identities are true :- (a) 5 sin’A + 3cos? A = 2 sin’A + 3 (b) 4 cos?a - 2sin?a = 6cos'a - 2 (c) (2cos P + 3sin P) ? + (3cos P - 2 sin P)? = 13 1 (d) tanQ+ tan sin cos (e) (sin B + cosp) - (sinß- cos B) = 4 sin ßcos ß sir y cost" yan 90 120 270 ON 10 70 100 TO